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Home / DTC / P1357 — Misfire Cylinder 8 With Fuel Cut-off

P1357 — Misfire Cylinder 8 With Fuel Cut-off

Detailed page for trouble code P1357.

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Code

P1357

BMW P — Powertrain

Misfire Cylinder 8 With Fuel Cut-off

Brand: BMW
Type: P — Powertrain
Views: UK: 22 EN: 39 RU: 23
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

BUICK P — Powertrain

IC Output High/Pulse Detected When Grounded Cyl.7

Brand: BUICK
Type: P — Powertrain
Views: UK: 23 EN: 35 RU: 20
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

CADILLAC P — Powertrain

IC Output High/Pulse Detected When Grounded Cyl.7

Brand: CADILLAC
Type: P — Powertrain
Views: UK: 23 EN: 39 RU: 24
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

CHEVROLET P — Powertrain

IC Output High/Pulse Detected When Grounded Cyl.7

Brand: CHEVROLET
Type: P — Powertrain
Views: UK: 19 EN: 34 RU: 21
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1357

CHRYSLER P — Powertrain

IC Output High Pulse Detected When Grounded Cyl 7

Brand: CHRYSLER
Type: P — Powertrain
Views: UK: 24 EN: 34 RU: 21
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
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Send to email
Code

P1357

DAEWOO P — Powertrain

#7 MISFIRE CIRCUIT - SHORT

Brand: DAEWOO
Type: P — Powertrain
Views: UK: 1 EN: 6 RU: 5
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1357

FORD P — Powertrain

Ignition Diagnostic Monitor Pulsewidth Not Defined

Brand: FORD
Type: P — Powertrain
Views: UK: 27 EN: 33 RU: 30
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1357

GM P — Powertrain

IC Output High Pulse Detected When Grounded Cyl 7

Brand: GM
Type: P — Powertrain
Views: UK: 22 EN: 31 RU: 31
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

GMC P — Powertrain

IC Output High Pulse Detected When Grounded Cyl 7

Brand: GMC
Type: P — Powertrain
Views: UK: 25 EN: 35 RU: 26
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

HUMMER P — Powertrain

IC Output High/Pulse Detected when GND_Cyl. 7

Brand: HUMMER
Type: P — Powertrain
Views: UK: 10 EN: 19 RU: 14
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

LINCOLN P — Powertrain

Ignition Diagnostic Monitor Pulsewidth Not Defined

Brand: LINCOLN
Type: P — Powertrain
Views: UK: 25 EN: 34 RU: 24
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

MERCURY P — Powertrain

Ignition Diagnostic Monitor Pulsewidth Not Defined

Brand: MERCURY
Type: P — Powertrain
Views: UK: 17 EN: 35 RU: 23
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
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Send to email
Code

P1357

OLDSMOBILE P — Powertrain

IC Output High Pulse Detected When Grounded Cyl 7

Brand: OLDSMOBILE
Type: P — Powertrain
Views: UK: 22 EN: 32 RU: 22
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
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Keep it short and practical. Up to 500 characters.
Send to email
Code

P1357

SATURN P — Powertrain

IC Output High Pulse Detected When Grounded Cyl.7

Brand: SATURN
Type: P — Powertrain
Views: UK: 20 EN: 30 RU: 21
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1357

SCION P — Powertrain

Valve timing control circuit malfunction

Brand: SCION
Type: P — Powertrain
Views: UK: 1 EN: 5 RU: 5
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
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Code

P1357

VOLKSWAGEN P — Powertrain

Cylinder 1 Ignition Circuit Short To Ground

Brand: VOLKSWAGEN
Type: P — Powertrain
Views: UK: 18 EN: 30 RU: 19
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Page language: EN

Causes

  • Faulty ignition coil or coil-on-plug for cylinder 8
  • Worn, fouled, or improperly gapped spark plug on cylinder 8
  • Faulty or clogged fuel injector for cylinder 8
  • Open/short in injector or coil wiring / poor connector contact
  • Low compression or mechanical valve/train problem in cylinder 8
  • Fuel delivery problem (low rail pressure, clogged filter)

Symptoms

  • Rough idle and engine vibration
  • Check Engine Light (MIL) illuminated
  • Reduced power, hesitation or stumbling under load
  • Higher fuel consumption and poor drivability
  • Possible difficulty starting or intermittent misfire
  • Possible increased exhaust smell or white/black smoke if severe

What to check

  • Read freeze frame and extended data with a scan tool to confirm P1357 and related codes
  • View per-cylinder misfire counters / cylinder contribution data
  • Scan for related codes: P0308, P0208, P0358, cam/crank sensor codes, fuel trim codes
  • Visually inspect coil, spark plug, injector connectors and wiring for damage or contamination
  • Swap coil and/or injector with a known-good cylinder to see if the misfire follows
  • Measure fuel rail pressure and inspect for fueling issues

Signal parameters

  • Misfire count for cylinder 8 (events/min or counts per drive cycle)
  • Short-term and long-term fuel trim (%)
  • Injector pulse width (ms) for cylinder 8 compared with other cylinders
  • Coil primary/secondary waveform (voltage, duration, spark energy)
  • Fuel rail pressure (bar or psi)
  • Battery/charging voltage (V) during cranking and running

Diagnostic algorithm

  1. Connect a full-feature scan tool. Record freeze-frame data and note any additional codes (P0208, P0358, P0308, cam/crank codes).
  2. Clear codes, perform a test drive while monitoring live data: per-cylinder misfire counts, fuel trims, O2 sensors, injector pulse widths and fuel rail pressure.
  3. If misfire repeats on cylinder 8, swap the coil onto another cylinder and re-run. If the misfire follows the coil, replace the coil.
  4. If swapping coil does not move the fault, swap the injector with another cylinder. If fault follows injector, replace injector.
  5. Inspect and test wiring and connectors for cylinder 8 (continuity to ECU, shorts to ground/power). Repair any damaged wiring or poor connectors.
  6. Remove and inspect spark plug for fouling, oil, or mechanical damage; replace as required and re-test.
  7. Check fuel pressure and perform an injector balance or staccato test to confirm proper spray and flow.
  8. Perform a compression and/or leak-down test on cylinder 8 to verify mechanical integrity. If low, investigate valves, piston rings, or head gasket.
  9. Verify cam/crank synchronization and timing chain/VANOS condition if symptoms or related codes suggest timing issues.
  10. After repairs, clear codes and verify the vehicle returns to normal operation under varied load. If intermittent, perform extended road test and monitor live data.
  11. If electrical and mechanical checks are good and misfire persists, consider ECU/software, or consult manufacturer technical bulletins.

Likely causes

  • Ignition coil or coil connector failure (most common)
  • Spark plug fouling/oil contamination causing weak spark
  • Injector electrical fault or injector sticking
  • Low compression (worn rings, burned valve) if coil/injector check OK
  • Intermittent wiring/connector fault between cylinder 8 components and ECM

Fault status

⚠️ Status
ECM detected repeated misfire events on cylinder 8 and has cut fuel delivery to that cylinder to protect the catalytic converter. MIL is set; drivability may be reduced. Additional codes or data are likely present and should be checked.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-4 hours
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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