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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.

Fuel System Check soon Clear all

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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 841–864 of 975

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P2B01Cylinder 2 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B01 relates to cylinder 2 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B02Cylinder 3 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B02 relates to cylinder 3 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B03Cylinder 4 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B03 relates to cylinder 4 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B04Cylinder 5 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B04 relates to cylinder 5 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B05Cylinder 6 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B05 relates to cylinder 6 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B06Cylinder 7 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B06 relates to cylinder 7 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B07Cylinder 8 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B07 relates to cylinder 8 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B08Cold Start Cylinder 1 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B08 relates to cold start cylinder 1 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B09Cold Start Cylinder 2 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B09 relates to cold start cylinder 2 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0ACold Start Cylinder 3 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0A relates to cold start cylinder 3 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0BCold Start Cylinder 4 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0B relates to cold start cylinder 4 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0CCold Start Cylinder 5 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0C relates to cold start cylinder 5 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0DCold Start Cylinder 6 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0D relates to cold start cylinder 6 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0ECold Start Cylinder 7 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0E relates to cold start cylinder 7 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0FCold Start Cylinder 8 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0F relates to cold start cylinder 8 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B10Cylinder 1 Injection Pulse Offset Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP2B10 relates to cylinder 1 injection pulse offset not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B11Cylinder 1 Injection Pulse Offset Exceeded Learning LimitCheck soonFuel System30–120 minutes for initial diagnosisP2B11 relates to cylinder 1 injection pulse offset exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B12Cylinder 2 Injection Pulse Offset Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP2B12 relates to cylinder 2 injection pulse offset not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B13Cylinder 2 Injection Pulse Offset Exceeded Learning LimitCheck soonFuel System30–120 minutes for initial diagnosisP2B13 relates to cylinder 2 injection pulse offset exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B14Cylinder 3 Injection Pulse Offset Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP2B14 relates to cylinder 3 injection pulse offset not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B15Cylinder 3 Injection Pulse Offset Exceeded Learning LimitCheck soonFuel System30–120 minutes for initial diagnosisP2B15 relates to cylinder 3 injection pulse offset exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B16Cylinder 4 Injection Pulse Offset Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP2B16 relates to cylinder 4 injection pulse offset not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B17Cylinder 4 Injection Pulse Offset Exceeded Learning LimitCheck soonFuel System30–120 minutes for initial diagnosisP2B17 relates to cylinder 4 injection pulse offset exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B18Cylinder 5 Injection Pulse Offset Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP2B18 relates to cylinder 5 injection pulse offset not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.