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Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 169–192 of 987

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P03B7Cylinder 4 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP03B7 relates to cylinder 4 pressure sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P03B8Cylinder 4 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03B8 relates to cylinder 4 pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03B9Cylinder 4 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03B9 relates to cylinder 4 pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03BACylinder 4 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03BA relates to cylinder 4 pressure variation low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03BBCylinder 4 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03BB relates to cylinder 4 pressure variation high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03BCCylinder 4 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03BC relates to cylinder 4 combustion performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P03BDCylinder 5 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP03BD relates to cylinder 5 pressure sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P03BECylinder 5 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03BE relates to cylinder 5 pressure sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P03BFCylinder 5 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03BF relates to cylinder 5 pressure sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C0Cylinder 5 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03C0 relates to cylinder 5 pressure sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C1Cylinder 5 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP03C1 relates to cylinder 5 pressure sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C2Cylinder 5 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03C2 relates to cylinder 5 pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C3Cylinder 5 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03C3 relates to cylinder 5 pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C4Cylinder 5 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03C4 relates to cylinder 5 pressure variation low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C5Cylinder 5 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03C5 relates to cylinder 5 pressure variation high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C6Cylinder 5 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03C6 relates to cylinder 5 combustion performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C7Cylinder 6 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP03C7 relates to cylinder 6 pressure sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C8Cylinder 6 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03C8 relates to cylinder 6 pressure sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P03C9Cylinder 6 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03C9 relates to cylinder 6 pressure sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03CACylinder 6 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03CA relates to cylinder 6 pressure sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03CBCylinder 6 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP03CB relates to cylinder 6 pressure sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P03CCCylinder 6 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03CC relates to cylinder 6 pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P03CDCylinder 6 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03CD relates to cylinder 6 pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P03CECylinder 6 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03CE relates to cylinder 6 pressure variation low. Check the fault conditions and vehicle-specific procedure before replacing parts.