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9,253 diagnostic guides

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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 4273–4296 of 7353

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P22ECCylinder 5 Alternative Fuel Injector Control Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP22EC relates to cylinder 5 alternative fuel injector control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P22EDCylinder 6 Alternative Fuel Injector Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP22ED relates to cylinder 6 alternative fuel injector control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P22EECylinder 6 Alternative Fuel Injector Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP22EE relates to cylinder 6 alternative fuel injector control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P22EFCylinder 6 Alternative Fuel Injector Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP22EF relates to cylinder 6 alternative fuel injector control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F0Cylinder 6 Alternative Fuel Injector Control Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP22F0 relates to cylinder 6 alternative fuel injector control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F1Cylinder 7 Alternative Fuel Injector Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP22F1 relates to cylinder 7 alternative fuel injector control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F2Cylinder 7 Alternative Fuel Injector Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP22F2 relates to cylinder 7 alternative fuel injector control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F3Cylinder 7 Alternative Fuel Injector Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP22F3 relates to cylinder 7 alternative fuel injector control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F4Cylinder 7 Alternative Fuel Injector Control Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP22F4 relates to cylinder 7 alternative fuel injector control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F5Cylinder 8 Alternative Fuel Injector Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP22F5 relates to cylinder 8 alternative fuel injector control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F6Cylinder 8 Alternative Fuel Injector Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP22F6 relates to cylinder 8 alternative fuel injector control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F7Cylinder 8 Alternative Fuel Injector Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP22F7 relates to cylinder 8 alternative fuel injector control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F8Cylinder 8 Alternative Fuel Injector Control Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP22F8 relates to cylinder 8 alternative fuel injector control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P22F9NOx Sensor Performance - Slow Response Low to High Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP22F9 relates to nox sensor performance - slow response low to high bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P22FANOx Sensor Performance - Slow Response High to Low Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP22FA relates to nox sensor performance - slow response high to low bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P22FBNOx Sensor Performance - Sensing Element Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP22FB relates to nox sensor performance - sensing element bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P22FCNOx Sensor Performance - Slow Response Low to High Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP22FC relates to nox sensor performance - slow response low to high bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P22FDNOx Sensor Performance - Slow Response High to Low Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP22FD relates to nox sensor performance - slow response high to low bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P22FENOx Sensor Performance - Sensing Element Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP22FE relates to nox sensor performance - sensing element bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P22FFSCR NOx Catalyst Inlet Temperature Too LowCheck soonEmissions System30–120 minutes for initial diagnosisP22FF relates to scr nox catalyst inlet temperature too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2300Ignition Coil A Primary Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2300 relates to ignition coil a primary control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2301Ignition Coil A Primary Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2301 relates to ignition coil a primary control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2302Ignition Coil A Secondary CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2302 relates to ignition coil a secondary circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2303Ignition Coil B Primary Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2303 relates to ignition coil b primary control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.