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Search the code from your scanner, then narrow the library by system, severity, or code family.
9,253 diagnostic guides
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh 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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 193–216 of 1049
P03BECylinder 5 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03BFCylinder 5 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03C0Cylinder 5 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03C1Cylinder 5 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP03C2Cylinder 5 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03C3Cylinder 5 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03C4Cylinder 5 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03C5Cylinder 5 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03C6Cylinder 5 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03C7Cylinder 6 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP03C8Cylinder 6 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03C9Cylinder 6 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03CACylinder 6 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03CBCylinder 6 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP03CCCylinder 6 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03CDCylinder 6 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03CECylinder 6 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03CFCylinder 6 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03D0Cylinder 6 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03D1Cylinder 7 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP03D2Cylinder 7 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03D3Cylinder 7 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03D4Cylinder 7 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03D5Cylinder 7 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosis