Code
P2009
Generic
P — Powertrain
Intake Manifold Runner Control Circuit Low Bank 1
Views:
UK: 20
EN: 41
RU: 44
AI status
Completed
Completed
100%
Causes
- Damaged or shorted IMRC wiring (short to ground)
- Corroded, loose or pushed-out connector at IMRC actuator/solenoid
- Failed IMRC actuator, motor or solenoid
- Stuck or seized intake runners due to carbon buildup or foreign material
- Blown fuse or faulty relay in the IMRC power circuit
- Faulty position sensor (if fitted) or bad reference/ground circuit
Symptoms
- Check Engine Light (MIL) illuminated, stored P2009
- Reduced engine power or torque, especially at certain RPM ranges
- Rough idle or hesitation under load
- Poor throttle response and reduced fuel economy
- Possible limp-home mode on some vehicles
- Clicking or unusual noises from the intake manifold area when the IMRC should operate
What to check
- Retrieve codes and freeze-frame / mode 6 data; note conditions when code set
- Use a scan tool to view IMRC position/command and any related sensor data live
- Visually inspect wiring harness and connector for Bank 1 IMRC for damage, corrosion, bent pins or water intrusion
- Check related fuses and relays for continuity and proper operation
- Backprobe IMRC connector to measure supply, signal and ground while commanding IMRC with a scan tool
- Perform a wiggle test on harness while monitoring signal to check for intermittent faults
Signal parameters
- Reference/sensor circuits typically use a 5 V reference; expected sensor signal 0–5 V depending on position (verify with vehicle service data)
- Actuator/solenoid power circuits typically use battery/ignition 12 V when energized; expect near 12 V on the power feed when commanded
- Solenoid coil resistance is vehicle-specific; commonly in the low ohm range (single to double digits up to a few tens of ohms) — check OEM specification before replacing
- When commanded open/closed, a responding IMRC should show a clear change in signal voltage or position value on a scan tool; a stuck/shorted circuit will show low or no change
Diagnostic algorithm
- Read and record freeze-frame data and related PIDs (IMRC position, commanded position, battery voltage, engine load, RPM).
- Clear codes and attempt to reproduce; note when and how the code returns.
- Visually inspect connector and harness at Bank 1 IMRC for damage, corrosion, pin fit and secure mounting. Repair as needed.
- Check fuses/relays for the IMRC/powertrain control circuits; replace any blown fuse or faulty relay.
- With connector backprobing, measure reference voltage (key ON), ground continuity, and signal/command voltage while commanding the IMRC with a scan tool. Compare to factory specs.
- If power/ground present but actuator does not move, measure coil resistance and bench-test actuator (apply specified voltage briefly) to confirm operation. Replace actuator if inoperative.
- If signal is low or stuck at ground, trace wiring back to ECM searching for shorts to ground or open circuits; repair wiring as needed.
- If wiring and actuator test good, inspect intake runners for mechanical seizure or carbon build-up; clean or repair the manifold and confirm free movement.
- If all components and wiring check good and fault persists, perform ECM grounding and supply checks and consider ECM diagnosis or replacement per manufacturer procedures.
- After repairs, clear codes and perform a test drive to verify the fault does not return.
Likely causes
- Short to ground in the IMRC harness to Bank 1
- Failed IMRC actuator/solenoid or internal motor
- Corroded/poor connector at the IMRC actuator
- Runners mechanically stuck (carbon buildup) preventing movement
Fault status
Status
P2009 - Intake Manifold Runner Control Circuit Low (Bank 1): low or no signal detected on IMRC circuit for Bank 1. Check wiring, connector, actuator and related fuses/relays.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P2009
HUMMER
P — Powertrain
Intake Manifold Runner Control (IMRC) Solenoid Control Circuit Low Voltage
Views:
UK: 8
EN: 10
RU: 29
AI status
Completed
Completed
100%
Causes
- Damaged or shorted IMRC wiring (short to ground)
- Corroded, loose or pushed-out connector at IMRC actuator/solenoid
- Failed IMRC actuator, motor or solenoid
- Stuck or seized intake runners due to carbon buildup or foreign material
- Blown fuse or faulty relay in the IMRC power circuit
- Faulty position sensor (if fitted) or bad reference/ground circuit
Symptoms
- Check Engine Light (MIL) illuminated, stored P2009
- Reduced engine power or torque, especially at certain RPM ranges
- Rough idle or hesitation under load
- Poor throttle response and reduced fuel economy
- Possible limp-home mode on some vehicles
- Clicking or unusual noises from the intake manifold area when the IMRC should operate
What to check
- Retrieve codes and freeze-frame / mode 6 data; note conditions when code set
- Use a scan tool to view IMRC position/command and any related sensor data live
- Visually inspect wiring harness and connector for Bank 1 IMRC for damage, corrosion, bent pins or water intrusion
- Check related fuses and relays for continuity and proper operation
- Backprobe IMRC connector to measure supply, signal and ground while commanding IMRC with a scan tool
- Perform a wiggle test on harness while monitoring signal to check for intermittent faults
Signal parameters
- Reference/sensor circuits typically use a 5 V reference; expected sensor signal 0–5 V depending on position (verify with vehicle service data)
- Actuator/solenoid power circuits typically use battery/ignition 12 V when energized; expect near 12 V on the power feed when commanded
- Solenoid coil resistance is vehicle-specific; commonly in the low ohm range (single to double digits up to a few tens of ohms) — check OEM specification before replacing
- When commanded open/closed, a responding IMRC should show a clear change in signal voltage or position value on a scan tool; a stuck/shorted circuit will show low or no change
Diagnostic algorithm
- Read and record freeze-frame data and related PIDs (IMRC position, commanded position, battery voltage, engine load, RPM).
- Clear codes and attempt to reproduce; note when and how the code returns.
- Visually inspect connector and harness at Bank 1 IMRC for damage, corrosion, pin fit and secure mounting. Repair as needed.
- Check fuses/relays for the IMRC/powertrain control circuits; replace any blown fuse or faulty relay.
- With connector backprobing, measure reference voltage (key ON), ground continuity, and signal/command voltage while commanding the IMRC with a scan tool. Compare to factory specs.
- If power/ground present but actuator does not move, measure coil resistance and bench-test actuator (apply specified voltage briefly) to confirm operation. Replace actuator if inoperative.
- If signal is low or stuck at ground, trace wiring back to ECM searching for shorts to ground or open circuits; repair wiring as needed.
- If wiring and actuator test good, inspect intake runners for mechanical seizure or carbon build-up; clean or repair the manifold and confirm free movement.
- If all components and wiring check good and fault persists, perform ECM grounding and supply checks and consider ECM diagnosis or replacement per manufacturer procedures.
- After repairs, clear codes and perform a test drive to verify the fault does not return.
Likely causes
- Short to ground in the IMRC harness to Bank 1
- Failed IMRC actuator/solenoid or internal motor
- Corroded/poor connector at the IMRC actuator
- Runners mechanically stuck (carbon buildup) preventing movement
Fault status
Status
P2009 - Intake Manifold Runner Control Circuit Low (Bank 1): low or no signal detected on IMRC circuit for Bank 1. Check wiring, connector, actuator and related fuses/relays.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
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Code
P2009
LAND ROVER
P — Powertrain
Low intake manifold runner control circuit (bank 1)
Views:
UK: 7
EN: 7
RU: 26
AI status
Completed
Completed
100%
Causes
- Damaged or shorted IMRC wiring (short to ground)
- Corroded, loose or pushed-out connector at IMRC actuator/solenoid
- Failed IMRC actuator, motor or solenoid
- Stuck or seized intake runners due to carbon buildup or foreign material
- Blown fuse or faulty relay in the IMRC power circuit
- Faulty position sensor (if fitted) or bad reference/ground circuit
Symptoms
- Check Engine Light (MIL) illuminated, stored P2009
- Reduced engine power or torque, especially at certain RPM ranges
- Rough idle or hesitation under load
- Poor throttle response and reduced fuel economy
- Possible limp-home mode on some vehicles
- Clicking or unusual noises from the intake manifold area when the IMRC should operate
What to check
- Retrieve codes and freeze-frame / mode 6 data; note conditions when code set
- Use a scan tool to view IMRC position/command and any related sensor data live
- Visually inspect wiring harness and connector for Bank 1 IMRC for damage, corrosion, bent pins or water intrusion
- Check related fuses and relays for continuity and proper operation
- Backprobe IMRC connector to measure supply, signal and ground while commanding IMRC with a scan tool
- Perform a wiggle test on harness while monitoring signal to check for intermittent faults
Signal parameters
- Reference/sensor circuits typically use a 5 V reference; expected sensor signal 0–5 V depending on position (verify with vehicle service data)
- Actuator/solenoid power circuits typically use battery/ignition 12 V when energized; expect near 12 V on the power feed when commanded
- Solenoid coil resistance is vehicle-specific; commonly in the low ohm range (single to double digits up to a few tens of ohms) — check OEM specification before replacing
- When commanded open/closed, a responding IMRC should show a clear change in signal voltage or position value on a scan tool; a stuck/shorted circuit will show low or no change
Diagnostic algorithm
- Read and record freeze-frame data and related PIDs (IMRC position, commanded position, battery voltage, engine load, RPM).
- Clear codes and attempt to reproduce; note when and how the code returns.
- Visually inspect connector and harness at Bank 1 IMRC for damage, corrosion, pin fit and secure mounting. Repair as needed.
- Check fuses/relays for the IMRC/powertrain control circuits; replace any blown fuse or faulty relay.
- With connector backprobing, measure reference voltage (key ON), ground continuity, and signal/command voltage while commanding the IMRC with a scan tool. Compare to factory specs.
- If power/ground present but actuator does not move, measure coil resistance and bench-test actuator (apply specified voltage briefly) to confirm operation. Replace actuator if inoperative.
- If signal is low or stuck at ground, trace wiring back to ECM searching for shorts to ground or open circuits; repair wiring as needed.
- If wiring and actuator test good, inspect intake runners for mechanical seizure or carbon build-up; clean or repair the manifold and confirm free movement.
- If all components and wiring check good and fault persists, perform ECM grounding and supply checks and consider ECM diagnosis or replacement per manufacturer procedures.
- After repairs, clear codes and perform a test drive to verify the fault does not return.
Likely causes
- Short to ground in the IMRC harness to Bank 1
- Failed IMRC actuator/solenoid or internal motor
- Corroded/poor connector at the IMRC actuator
- Runners mechanically stuck (carbon buildup) preventing movement
Fault status
Status
P2009 - Intake Manifold Runner Control Circuit Low (Bank 1): low or no signal detected on IMRC circuit for Bank 1. Check wiring, connector, actuator and related fuses/relays.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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👍 Like
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Send to email
Code
P2009
MITSUBISHI
P — Powertrain
Swirl control valve circuit low
Views:
UK: 11
EN: 8
RU: 28
AI status
Completed
Completed
100%
Causes
- Damaged or shorted IMRC wiring (short to ground)
- Corroded, loose or pushed-out connector at IMRC actuator/solenoid
- Failed IMRC actuator, motor or solenoid
- Stuck or seized intake runners due to carbon buildup or foreign material
- Blown fuse or faulty relay in the IMRC power circuit
- Faulty position sensor (if fitted) or bad reference/ground circuit
Symptoms
- Check Engine Light (MIL) illuminated, stored P2009
- Reduced engine power or torque, especially at certain RPM ranges
- Rough idle or hesitation under load
- Poor throttle response and reduced fuel economy
- Possible limp-home mode on some vehicles
- Clicking or unusual noises from the intake manifold area when the IMRC should operate
What to check
- Retrieve codes and freeze-frame / mode 6 data; note conditions when code set
- Use a scan tool to view IMRC position/command and any related sensor data live
- Visually inspect wiring harness and connector for Bank 1 IMRC for damage, corrosion, bent pins or water intrusion
- Check related fuses and relays for continuity and proper operation
- Backprobe IMRC connector to measure supply, signal and ground while commanding IMRC with a scan tool
- Perform a wiggle test on harness while monitoring signal to check for intermittent faults
Signal parameters
- Reference/sensor circuits typically use a 5 V reference; expected sensor signal 0–5 V depending on position (verify with vehicle service data)
- Actuator/solenoid power circuits typically use battery/ignition 12 V when energized; expect near 12 V on the power feed when commanded
- Solenoid coil resistance is vehicle-specific; commonly in the low ohm range (single to double digits up to a few tens of ohms) — check OEM specification before replacing
- When commanded open/closed, a responding IMRC should show a clear change in signal voltage or position value on a scan tool; a stuck/shorted circuit will show low or no change
Diagnostic algorithm
- Read and record freeze-frame data and related PIDs (IMRC position, commanded position, battery voltage, engine load, RPM).
- Clear codes and attempt to reproduce; note when and how the code returns.
- Visually inspect connector and harness at Bank 1 IMRC for damage, corrosion, pin fit and secure mounting. Repair as needed.
- Check fuses/relays for the IMRC/powertrain control circuits; replace any blown fuse or faulty relay.
- With connector backprobing, measure reference voltage (key ON), ground continuity, and signal/command voltage while commanding the IMRC with a scan tool. Compare to factory specs.
- If power/ground present but actuator does not move, measure coil resistance and bench-test actuator (apply specified voltage briefly) to confirm operation. Replace actuator if inoperative.
- If signal is low or stuck at ground, trace wiring back to ECM searching for shorts to ground or open circuits; repair wiring as needed.
- If wiring and actuator test good, inspect intake runners for mechanical seizure or carbon build-up; clean or repair the manifold and confirm free movement.
- If all components and wiring check good and fault persists, perform ECM grounding and supply checks and consider ECM diagnosis or replacement per manufacturer procedures.
- After repairs, clear codes and perform a test drive to verify the fault does not return.
Likely causes
- Short to ground in the IMRC harness to Bank 1
- Failed IMRC actuator/solenoid or internal motor
- Corroded/poor connector at the IMRC actuator
- Runners mechanically stuck (carbon buildup) preventing movement
Fault status
Status
P2009 - Intake Manifold Runner Control Circuit Low (Bank 1): low or no signal detected on IMRC circuit for Bank 1. Check wiring, connector, actuator and related fuses/relays.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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0
Send to email