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9,253 diagnostic guides

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Find codes by symptomChoose what you notice to search matching code guides.

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

FiltersSeverity · family

Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 1321–1344 of 9253

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P0311Cylinder 11 Misfire DetectedCheck soonEngine Problems30–120 minutes for initial diagnosisP0311 relates to cylinder 11 misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P0312Cylinder 12 Misfire DetectedCheck soonEngine Problems30–120 minutes for initial diagnosisP0312 relates to cylinder 12 misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P0313Misfire Detected With Low FuelCheck soonFuel System30–120 minutes for initial diagnosisP0313 relates to misfire detected with low fuel. Check the fault conditions and vehicle-specific procedure before replacing parts.P0314Single Cylinder Misfire (Cylinder not Specified)Check soonEngine Problems30–120 minutes for initial diagnosisP0314 relates to single cylinder misfire (cylinder not specified). Check the fault conditions and vehicle-specific procedure before replacing parts.P0315Crankshaft Position System Variation Not LearnedCheck soonEngine Problems30–120 minutes for initial diagnosisP0315 relates to crankshaft position system variation not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P0316Misfire Detected on Startup First 1000 RevolutionsUrgentEngine Problems1–3 hours for initial diagnosisP0316 means Misfire Detected on Startup First 1000 Revolutions. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0317Rough Road Hardware Not PresentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0317 relates to rough road hardware not present. Check the fault conditions and vehicle-specific procedure before replacing parts.P0318Rough Road Sensor A Signal CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0318 relates to rough road sensor a signal circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0319Rough Road Sensor B Signal CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0319 relates to rough road sensor b signal circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P031AIgnition C Control Signal Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP031A relates to ignition c control signal circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P031BIgnition C Control Signal Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP031B relates to ignition c control signal circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P031CIgnition C Control Signal Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP031C relates to ignition c control signal circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P031DIgnition D Control Signal Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP031D relates to ignition d control signal circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P031EIgnition D Control Signal Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP031E relates to ignition d control signal circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P031FIgnition D Control Signal Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP031F relates to ignition d control signal circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0320Ignition/Distributor Engine Speed Input CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP0320 relates to ignition/distributor engine speed input circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0321Ignition/Distributor Engine Speed Input Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0321 relates to ignition/distributor engine speed input circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0322Ignition/Distributor Engine Speed Input Circuit No SignalCheck soonEngine Problems30–120 minutes for initial diagnosisP0322 relates to ignition/distributor engine speed input circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P0323Ignition/Distributor Engine Speed Input Circuit IntermittentCheck soonEngine Problems30–120 minutes for initial diagnosisP0323 relates to ignition/distributor engine speed input circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0324Knock/Combustion Vibration Control System ErrorCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0324 relates to knock/combustion vibration control system error. Check the fault conditions and vehicle-specific procedure before replacing parts.P0326Knock/Combustion Vibration Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0326 relates to knock/combustion vibration sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0328Knock/Combustion Vibration Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0328 relates to knock/combustion vibration sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0329Knock/Combustion Vibration Sensor A Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0329 relates to knock/combustion vibration sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P032AKnock/Combustion Vibration Sensor C CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP032A relates to knock/combustion vibration sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.