Code
P1639
BMW
P — Powertrain
Throttle Valve Position Control Throttle Stuck Permanently
Views:
UK: 39
EN: 106
RU: 41
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
BUICK
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 36
EN: 72
RU: 45
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
CADILLAC
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 34
EN: 73
RU: 41
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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0
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Code
P1639
CHEVROLET
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 32
EN: 75
RU: 41
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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👍 Like
0
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0
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Code
P1639
CITROEN
P — Powertrain
Supply relay control short circuit to earth or open circuit
Views:
UK: 16
EN: 44
RU: 16
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
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0
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Code
P1639
DAEWOO
P — Powertrain
Ecu (micom) crct fault
Views:
UK: 15
EN: 42
RU: 19
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
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0
Send to email
Code
P1639
DS
P — Powertrain
Supply relay control short circuit to earth or open circuit
Views:
UK: 14
EN: 46
RU: 17
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
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0
Send to email
Code
P1639
FORD
P — Powertrain
Vehicle ID Block Corrupted or Not Programmed
Views:
UK: 36
EN: 76
RU: 41
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P1639
GM
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 33
EN: 70
RU: 37
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
GMC
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 37
EN: 85
RU: 45
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
GWM
P — Powertrain
- 2 circuit 5 volts, only for car Oldsmobile | 2 circuit 5 volts, only for the car Chevrolet
Views:
UK: 20
EN: 41
RU: 20
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
HUMMER
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 22
EN: 53
RU: 27
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Repair manuals
Manual library for HUMMER
69
Browse 69 HUMMER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
HUMMER
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Code
P1639
LAND ROVER
P — Powertrain
Corrupted vehicle identification block, not programmed
Views:
UK: 18
EN: 46
RU: 25
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Repair manuals
Manual library for LAND ROVER
160
Browse 160 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
LAND ROVER
-
LAND ROVER: 2023
-
Range Rover Velar
-
-
LAND ROVER: 2022
-
Discovery Sport
-
Range Rover
- Autobiography, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover Autobiography
- 2022 Range Rover Base
- First Edition
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover HSE Westminster
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover SE
- SE, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover SE
- SV
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic Blk.
-
Range Rover Evoque
-
Range Rover Sport
-
Range Rover Velar
-
LAND ROVER: 2021
-
Discovery Sport
-
Range Rover
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Autobiography
- Autobiography Fifty Edition
- 2021 Range Rover Base
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover HSE
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover HSE Westminster
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic Blk.
-
Range Rover Evoque
-
Range Rover Sport
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography Dynamic
- HSE Dynamic
- HSE Silver Edition, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Sport HSE Silver Edition
- HST
- SE
- SVR
- SVR Carbon Edition
-
Range Rover Velar
-
LAND ROVER: 2020
-
Discovery
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE
- HSE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE
- HSE Luxury, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE Luxury
- Landmark
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery SE
- SE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery SE
-
Discovery Sport
-
Range Rover
- Autobiography
- Base, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Base
- Base, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Base
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover HSE
- SVAutobiography
- SVAutobiography Dynamic
-
Range Rover Evoque
-
Range Rover Sport
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport Autobiography Dynamic
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport HSE
- HSE Dynamic
- HSE PHEV
- HST
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport SE
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport SE
- SVR
-
Range Rover Velar
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Range Rover Velar R-Dynamic S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Range Rover Velar S
- S, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Range Rover Velar S
- SVAutobiography Dyn.
-
LAND ROVER: 2019
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Code
P1639
LINCOLN
P — Powertrain
Vehicle ID Block Corrupted or Not Programmed
Views:
UK: 35
EN: 78
RU: 40
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
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Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
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0
Send to email
Code
P1639
MERCURY
P — Powertrain
Vehicle ID Block Corrupted or Not Programmed
Views:
UK: 33
EN: 79
RU: 38
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
OLDSMOBILE
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 31
EN: 74
RU: 37
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1639
Other
P — Powertrain
Vehicle ID Block Corrupted or Not Programmed
Views:
UK: 32
EN: 72
RU: 44
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Repair manuals
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Code
P1639
PEUGEOT
P — Powertrain
Supply relay control short circuit to earth or open circuit
Views:
UK: 17
EN: 45
RU: 20
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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0
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0
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Code
P1639
RAM
P — Powertrain
TCM Internal - CAN 2 RAM Performance
Views:
UK: 16
EN: 46
RU: 20
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Was this AI description helpful?
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0
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Code
P1639
SATURN
P — Powertrain
5 Volt Reference 2 Circuit
Views:
UK: 32
EN: 83
RU: 42
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Your experience will help others
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Was this AI description helpful?
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👍 Like
0
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0
Send to email
Code
P1639
VOLKSWAGEN
P — Powertrain
Accelerator Pedal Position Sensor 1/2 Range Performance
Views:
UK: 35
EN: 100
RU: 41
AI status
Completed
Completed
100%
Causes
- Carbon buildup or debris preventing throttle plate movement
- Failed throttle body (stuck plate or seized motor/gear)
- Faulty throttle position sensor(s) or accelerator pedal sensors
- Damaged wiring or poor connector contact to throttle actuator/sensors
- Blown fuse, relay fault, or low battery/poor charging system voltage
- ECU/DME software fault or internal driver failure
Symptoms
- Engine enters limp/reduced-power mode
- Little or no throttle response to accelerator pedal
- Check Engine Light or throttle-related warning lamp illuminated
- Rough idle or engine stalling at low speeds
- Stored or pending throttle/actuator related DTCs
What to check
- Read freeze frame and live data with a capable scan tool (throttle angle, requested vs actual, pedal positions)
- Visual inspection of throttle body & intake for debris and linkage binding
- Check battery voltage and charging system (stable >12.5 V with engine off, ~13.5–14.5 V charging)
- Inspect wiring harness and connectors for corrosion, damage or poor pins at throttle body and pedal sensors
- Check relevant fuses/relays for the DME/throttle actuator circuit
- Attempt throttle actuator/learning tests using factory-level diagnostic tool
Signal parameters
- Accelerator pedal position sensors: smooth, correlated voltage/percentage change across range (commonly 0–100% or ~0.5–4.5 V per sensor)
- Throttle plate reported angle: closed/idling typically near 0–15% (depending on engine), full demand >80–100%
- Requested vs actual throttle: requested angle should track pedal; large persistent deviation indicates actuator or mechanical fault
- Throttle actuator current/drive signal (where available): should show transient current when moving; continuous high current may indicate binding or seized motor
- No erratic spikes or dropouts in sensor signals during pedal travel
Diagnostic algorithm
- Retrieve all related DTCs and freeze frame data. Note requested vs actual throttle and pedal sensor values.
- Perform a visual inspection of intake tract and throttle body for carbon, deposits or foreign objects. Remove intake boots only when engine is cool.
- Verify battery and charging system voltage; charge battery if low and recheck codes.
- Inspect wiring and connectors at the throttle body and accelerator pedal module for corrosion, looseness, broken wires or water intrusion.
- Use a scan tool to command throttle actuator (actuator self-test) and observe throttle plate movement and live data. If actuator fails to move, record behavior.
- Check pedal sensor outputs for smooth, proportional change and correlation between sensors (no sensor disagreement).
- If wiring and connector checks are OK but actuator will not move or reports frozen, perform continuity/resistance checks on actuator motor leads per factory procedure.
- If mechanical binding is suspected, remove throttle body for bench inspection and cleaning (follow manufacturer procedure and torque specs). Inspect for seized gears or broken actuator components.
- Replace throttle body if actuator/motor or internal mechanical components are defective. Replace wiring/connector repair as needed.
- After repair or cleaning, perform throttle adaptation/learning procedure with scan tool, clear codes, and verify proper response under road test.
- If issue persists after replacing throttle body and repairing wiring, consider ECU/DME diagnosis or replacement as a last step.
Likely causes
- Mechanical binding or carbon deposits on throttle plate
- Throttle body actuator motor or internal gear failure
- Intermittent/shorted wiring or corroded connector at throttle body
- Faulty throttle position sensor or accelerator pedal sensor correlation error
Fault status
Status
Throttle valve stuck permanently detected; throttle actuator unable to follow requested position. Reduced engine power (limp mode) engaged until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Repair manuals
Manual library for VOLKSWAGEN
139
Browse 139 VOLKSWAGEN manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
VOLKSWAGEN
-
VOLKSWAGEN: 2021
-
Atlas
- S, AWD
- S, FWD
- SE, 2.0L Eng VIN P, AWD
- SE, 2.0L Eng VIN P, FWD
- SE, 3.6L Eng VIN R, AWD
- SE, 3.6L Eng VIN R, FWD
- SEL, 2.0L Eng VIN P · 2.0L Eng VIN P2021: Atlas SEL
- SEL, 3.6L Eng VIN R, AWD
- SEL, 3.6L Eng VIN R, FWD
- SEL Premium, 2.0L Eng VIN P · 2.0L Eng VIN P2021: Atlas SEL Premium
- SEL Premium, 3.6L Eng VIN R · 3.6L Eng VIN R2021: Atlas SEL Premium
- SEL Premium R-Line
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
Atlas Cross Sport
- S, AWD
- S, FWD
- SE, 2.0L Eng VIN C, AWD
- SE, 2.0L Eng VIN C, FWD
- SE, 3.6L Eng VIN E, AWD
- SE, 3.6L Eng VIN E, FWD
- SEL, 2.0L Eng VIN C · 2.0L Eng VIN C2021: Atlas Cross Sport SEL
- SEL, 3.6L Eng VIN E, AWD
- SEL, 3.6L Eng VIN E, FWD
- SEL Premium, 2.0L Eng VIN C · 2.0L Eng VIN C2021: Atlas Cross Sport SEL Premium
- SEL Premium, 3.6L Eng VIN E · 3.6L Eng VIN E2021: Atlas Cross Sport SEL Premium
- SEL Premium R-Line
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
VOLKSWAGEN: 2020
-
Atlas
- S, 2.0L Eng VIN P · 2.0L Eng VIN P2020: Atlas S
- S, 3.6L Eng VIN R · 3.6L Eng VIN R2020: Atlas S
- SE, 2.0L Eng VIN P · 2.0L Eng VIN P2020: Atlas SE
- SE, 3.6L Eng VIN R, AWD
- SE, 3.6L Eng VIN R, FWD
- SEL, 2.0L Eng VIN P · 2.0L Eng VIN P2020: Atlas SEL
- SEL, 3.6L Eng VIN R, AWD
- SEL, 3.6L Eng VIN R, FWD
- SEL Premium
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
Atlas Cross Sport
- S, AWD
- S, FWD
- SE, 2.0L Eng VIN C, AWD
- SE, 2.0L Eng VIN C, FWD
- SE, 3.6L Eng VIN E, AWD
- SE, 3.6L Eng VIN E, FWD
- SEL, 2.0L Eng VIN C, AWD
- SEL, 2.0L Eng VIN C, FWD
- SEL, 3.6L Eng VIN E, AWD
- SEL, 3.6L Eng VIN E, FWD
- SEL Premium
- SEL Premium R-Line
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
Jetta
- GLI Autobahn, Automatic DCT Trans
- GLI Autobahn, Standard Trans
- GLI S, Automatic DCT Trans
- GLI S, Standard Trans
- R-Line, 1.4L Eng VIN 5, Automatic Trans
- R-Line, 1.4L Eng VIN 5, Standard Trans
- R-Line, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta R-Line
- S, 1.4L Eng VIN 5, Automatic Trans
- S, 1.4L Eng VIN 5, Standard Trans
- S, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta S
- SE, 1.4L Eng VIN 5 · 1.4L Eng VIN 52020: Jetta SE
- SE, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta SE
- SEL, 1.4L Eng VIN 5 · 1.4L Eng VIN 52020: Jetta SEL
- SEL, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta SEL
- SEL Premium, 1.4L Eng VIN 5 · 1.4L Eng VIN 52020: Jetta SEL Premium
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