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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.

Check soon P · Powertrain 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 3553–3576 of 6682

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P21ECCylinder 9 Injector B Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP21EC relates to cylinder 9 injector b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P21EDCylinder 9 Injector B Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP21ED relates to cylinder 9 injector b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P21EECylinder 10 Injector B Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP21EE relates to cylinder 10 injector b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P21EFCylinder 10 Injector B Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP21EF relates to cylinder 10 injector b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F0Cylinder 11 Injector B Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP21F0 relates to cylinder 11 injector b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F1Cylinder 11 Injector B Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP21F1 relates to cylinder 11 injector b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F2Cylinder 12 Injector B Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP21F2 relates to cylinder 12 injector b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F3Cylinder 12 Injector B Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP21F3 relates to cylinder 12 injector b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F4Fuel Control System B Too Lean Off Idle Bank 1Check soonFuel System30–120 minutes for initial diagnosisP21F4 relates to fuel control system b too lean off idle bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F5Fuel Control System B Too Rich Off Idle Bank 1Check soonFuel System30–120 minutes for initial diagnosisP21F5 relates to fuel control system b too rich off idle bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F6Fuel Control System B Too Lean Off Idle Bank 2Check soonFuel System30–120 minutes for initial diagnosisP21F6 relates to fuel control system b too lean off idle bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F7Fuel Control System B Too Rich Off Idle Bank 2Check soonFuel System30–120 minutes for initial diagnosisP21F7 relates to fuel control system b too rich off idle bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F8Fuel Control System B Too Lean at Idle Bank 1Check soonFuel System30–120 minutes for initial diagnosisP21F8 relates to fuel control system b too lean at idle bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P21F9Fuel Control System B Too Rich at Idle Bank 1Check soonFuel System30–120 minutes for initial diagnosisP21F9 relates to fuel control system b too rich at idle bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P21FAFuel Control System B Too Lean at Idle Bank 2Check soonFuel System30–120 minutes for initial diagnosisP21FA relates to fuel control system b too lean at idle bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P21FBFuel Control System B Too Rich at Idle Bank 2Check soonFuel System30–120 minutes for initial diagnosisP21FB relates to fuel control system b too rich at idle bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P21FCFuel Control System B Too Lean at Higher Load Bank 1Check soonFuel System30–120 minutes for initial diagnosisP21FC relates to fuel control system b too lean at higher load bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P21FDFuel Control System B Too Rich at Higher Load Bank 1Check soonFuel System30–120 minutes for initial diagnosisP21FD relates to fuel control system b too rich at higher load bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P21FEFuel Control System B Too Lean at Higher Load Bank 2Check soonFuel System30–120 minutes for initial diagnosisP21FE relates to fuel control system b too lean at higher load bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P21FFFuel Control System B Too Rich at Higher Load Bank 2Check soonFuel System30–120 minutes for initial diagnosisP21FF relates to fuel control system b too rich at higher load bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2200NOx Sensor Circuit Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2200 relates to nox sensor circuit bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2201NOx Sensor Circuit Range/Performance Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2201 relates to nox sensor circuit range/performance bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2202NOx Sensor Circuit Low Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2202 relates to nox sensor circuit low bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2203NOx Sensor Circuit High Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2203 relates to nox sensor circuit high bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.