Code
P1194
DAEWOO
P — Powertrain
ETS LIMPHOME TPS2 POS. MAL.
Views:
UK: 3
EN: 3
RU: 4
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
DODGE
P — Powertrain
Incorrect Or Irrational Performance Has Been Detected For The PWM
Views:
UK: 15
EN: 27
RU: 19
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
FORD
P — Powertrain
ECU A/D Converter
Views:
UK: 13
EN: 25
RU: 18
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
JAGUAR
P — Powertrain
O2 Sensor Heater Circuit Resistance Fault
Views:
UK: 14
EN: 31
RU: 19
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
JEEP
P — Powertrain
Incorrect Or Irrational Performance Has Been Detected For The PWM
Views:
UK: 16
EN: 27
RU: 19
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
LAND ROVER
P — Powertrain
Heater circuit resistance failure of the oxygen sensor heated (sensor of banks 1 and 2)
Views:
UK: 4
EN: 8
RU: 6
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
LINCOLN
P — Powertrain
ECU A/D Converter
Views:
UK: 16
EN: 31
RU: 20
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
MAZDA
P — Powertrain
ECM PCM A D Converter
Views:
UK: 16
EN: 26
RU: 18
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
Similar codes
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Code
P1194
MERCURY
P — Powertrain
ECU A/D Converter
Views:
UK: 13
EN: 27
RU: 15
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
Other
P — Powertrain
ECU A/D Converter
Views:
UK: 15
EN: 28
RU: 22
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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Code
P1194
PLYMOUTH
P — Powertrain
Incorrect Or Irrational Performance Has Been Detected For The PWM
Views:
UK: 17
EN: 33
RU: 21
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
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0
Send to email
Code
P1194
PONTIAC
P — Powertrain
Incorrect Or Irrational Performance Has Been Detected For The PWM
Views:
UK: 14
EN: 27
RU: 21
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
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0
Send to email
Code
P1194
RAM
P — Powertrain
PWM O2 Heater Relay Performance
Views:
UK: 4
EN: 4
RU: 3
AI status
Completed
Completed
100%
Causes
- Faulty TPS2 (secondary throttle position sensor)
- Damaged or corroded wiring / poor connector contact at TPS or throttle body
- Open or short circuit in TPS2 signal or reference circuit
- Contaminated or mechanically sticky throttle plate / throttle body
- Faulty throttle body assembly (integrated sensors)
- Low or unstable battery voltage / poor ground
Symptoms
- Check Engine MIL illuminated
- Reduced engine power or 'limp' mode activated
- Limited throttle response or fixed low RPM limit
- Erratic idle, stalling or hesitation on acceleration
- Stored P1194 and possibly related throttle / TPS codes
What to check
- Read trouble codes and freeze frame data with a capable scan tool
- Confirm battery voltage is within normal range (12.4–14.5 V) during tests
- Visually inspect TPS/throttle body connector and wiring for corrosion, damage, or loose pins
- Monitor live data: TPS1 and TPS2 voltages/percent and compare at closed throttle and WOT
- Perform a wiggle test on wiring while watching live data for intermittent changes
- Check for additional related codes (e.g., throttle actuator or sensor disagreement codes)
Signal parameters
- TPS2 nominal voltage (key ON, engine OFF): approx. 0.5 V at closed throttle to ~4.5 V at WOT (model-dependent)
- TPS1/TPS2 correlation: one sensor typically increases while the other decreases or both follow specific ramp patterns — they must be consistent and within specified tolerance
- Reference voltage to TPS: typically ~5 V regulated by ECU; reference should be stable
- Signal ground continuity: near 0 ohms to chassis ground at harness connector
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data; note any other throttle or sensor codes.
- Verify battery voltage and good grounds. Recharge or support battery if low before testing.
- Visually inspect throttle body connector, pins and wiring for corrosion, bent pins or water ingress. Repair as needed.
- Using a scan tool, observe live TPS1 and TPS2 voltages/percent with key ON engine OFF. With closed throttle, verify voltages at expected idle/closed values; slowly open throttle and watch for smooth, monotonic change in both sensors.
- Compare TPS1 vs TPS2 behavior — they must correlate per manufacturer spec (no sudden jumps or opposite unexpected behavior).
- Perform wiggle test on wiring and connector while watching live data for intermittent faults. Backprobe connector to measure reference voltage, signal, and ground. Repair any open/shorts.
- Inspect and clean throttle body if carbon build-up is present; ensure throttle plate moves freely and returns to closed position smoothly.
- If wiring and connector are good but TPS2 signal is out of specification or intermittent, replace TPS or entire throttle body assembly per service manual.
- After repairs, clear codes and perform throttle relearn/adaptation procedure if required by manufacturer. Test drive and re-scan to confirm the code does not return.
- If fault persists after sensor/throttle body replacement, consider ECM/ETS module diagnosis by a specialist.
Likely causes
- Loose/corroded connector at throttle body or TPS2
- TPS2 internal failure (out of spec voltage or intermittent)
- Wiring chafed/shorted between TPS2 and ECM
- Carbon build-up causing throttle plate to stick and produce inconsistent sensor readings
- Failed throttle body assembly requiring replacement
Fault status
Status
ETS limp-home mode triggered due to TPS2 position malfunction (invalid/inconsistent TPS2 signal).
Repair difficulty: Medium
Diagnostic time: 1-3 hours
Similar codes
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