Code
P1351
BMW
P — Powertrain
Misfire Cylinder 5 With Fuel Cut-off
Views:
UK: 31
EN: 62
RU: 57
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
BUICK
P — Powertrain
IC Circuit High Voltage
Views:
UK: 28
EN: 47
RU: 53
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
CADILLAC
P — Powertrain
IC Circuit High Voltage
Views:
UK: 27
EN: 43
RU: 51
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
CHEVROLET
P — Powertrain
IC Circuit High Voltage
Views:
UK: 27
EN: 41
RU: 50
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
CHRYSLER
P — Powertrain
IC Circuit High Voltage
Views:
UK: 31
EN: 58
RU: 57
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
DAEWOO
P — Powertrain
#1 MISFIRE CIRCUIT - SHORT
Views:
UK: 4
EN: 5
RU: 10
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
FORD
P — Powertrain
Ignition Diagnostic Monitor Circuit Input Fault
Views:
UK: 27
EN: 45
RU: 53
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
Similar codes
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Was this AI description helpful?
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Code
P1351
GM
P — Powertrain
IC Circuit High Voltage
Views:
UK: 32
EN: 43
RU: 51
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
GMC
P — Powertrain
IC Circuit High Voltage
Views:
UK: 28
EN: 45
RU: 55
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
HUMMER
P — Powertrain
Ignition Coil Control Circuit High Voltage
Views:
UK: 11
EN: 18
RU: 40
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
LEXUS
P — Powertrain
VVT Sensor Range Performance Problem Bank 2
Views:
UK: 31
EN: 49
RU: 57
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
LINCOLN
P — Powertrain
Ignition Diagnostic Monitor Circuit Input Fault
Views:
UK: 28
EN: 45
RU: 54
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
MAZDA
P — Powertrain
Ignition Diagnostic Monitor Signal Lost To PCM Or Out Of Range
Views:
UK: 27
EN: 44
RU: 51
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
MERCEDES-BENZ
P — Powertrain
Injection Sensor Circuit
Views:
UK: 20
EN: 25
RU: 40
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
MERCURY
P — Powertrain
Ignition Diagnostic Monitor Circuit Input Fault
Views:
UK: 28
EN: 55
RU: 53
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
OLDSMOBILE
P — Powertrain
IC Circuit High Voltage
Views:
UK: 32
EN: 43
RU: 53
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
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Code
P1351
Other
P — Powertrain
IDM Input Circuit Malfunction/ Ignition Coil Control Circuit High Voltage
Views:
UK: 30
EN: 46
RU: 57
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 hours
Similar codes
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Was this AI description helpful?
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Code
P1351
SATURN
P — Powertrain
IC Circuit High Voltage
Views:
UK: 33
EN: 52
RU: 66
AI status
Completed
Completed
100%
Causes
- Faulty ignition coil or coil-on-plug for cylinder 5
- Worn or fouled spark plug in cylinder 5
- Faulty fuel injector (stuck open/closed or electrical fault) for cylinder 5
- Open/shorted wiring or poor connector at coil or injector (pin corrosion, broken wire)
- Low compression or mechanical damage in cylinder 5 (valve, piston, head gasket)
- Fuel supply problem or low rail pressure under load
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or visible engine shake, especially at idle
- Reduced power and poor acceleration
- Misfire detected only on cylinder 5 (higher misfire count)
- Possible fuel cut sensation or intermittent loss of running on one cylinder
- Increased fuel consumption and possible catalytic converter fault if driven long-term
What to check
- Read stored and pending DTCs and freeze-frame data with a capable BMW scan tool
- Monitor live data: misfire counters (per-cylinder), injector duty, coil firing, RPM and fuel trims
- Check for related codes (cam/crank, fuel rail, lambda sensors)
- Visual inspection of coil, spark plug and injector for cylinder 5 (carbon tracking, oil, fouling)
- Inspect wiring and connectors for the coil and injector of cylinder 5 for damage, corrosion or loose pins
- Swap coil (and/or injector) from cylinder 5 with another cylinder and re-check to see if misfire follows the component
Signal parameters
- Cylinder-specific misfire count (cylinder 5)
- Injector pulse width (ms) for cylinder 5
- Ignition coil primary/secondary voltage or secondary waveform
- Short-term and long-term fuel trim (%)
- Fuel rail pressure (bar or psi)
- Engine RPM (rpm) and fluctuation during idle
Diagnostic algorithm
- Retrieve full DTC list and freeze-frame data; note conditions when fault occurred (load, RPM, temp).
- Clear codes and perform warm-up then monitor live per-cylinder misfire counts and related parameters.
- Inspect cylinder 5 spark plug and coil: remove coil, examine plug condition, measure coil/resistance if applicable; replace plug if fouled/worn.
- Swap the ignition coil from cylinder 5 with a known-good coil on another cylinder; rerun and check if misfire moves to new cylinder (if it moves, replace coil).
- If coil swap is negative, swap injectors between cylinder 5 and another cylinder and re-check misfire (if misfire moves, replace injector).
- If swaps don’t move fault, check wiring and connectors for continuity, shorts to ground or open circuits for both coil and injector circuits; repair as needed.
- Perform a compression test or leak-down on cylinder 5 and compare to other cylinders; if low, investigate valves, head gasket, piston/rings.
- Verify fuel rail pressure and supply under load; inspect for clogged rail/return or pressure regulator faults.
- Check cam/crank sensor signals and timing; correct timing or camshaft actuator faults if present.
- After repair, clear codes and road test under the conditions that originally triggered the code; confirm cure and ensure no new related faults.
- If diagnostics are inconclusive and all components test good, consider ECM/software update or replacement and consult BMW technical service information.
Likely causes
- Ignition coil or spark plug failure on cylinder 5
- Injector electrical fault or clogged/stuck injector on cylinder 5
- Wiring harness/connector problem to coil or injector on cylinder 5
- Low compression or valve problem in cylinder 5
Fault status
Status
Misfire detected on cylinder 5. Engine control has disabled fuel to cylinder 5 (fuel cut-off) to protect emissions system. Investigation of ignition, fuel, mechanical and wiring for cylinder 5 is required.
Repair difficulty: Medium
Diagnostic time: 2-4 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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Send to email