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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 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 505–528 of 1016

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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.P224CAlternative Fuel Tank Shutoff Valve A Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP224C relates to alternative fuel tank shutoff valve a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P224DAlternative Fuel Tank Shutoff Valve A Control Circuit Performance/Stuck OffCheck soonFuel System30–120 minutes for initial diagnosisP224D relates to alternative fuel tank shutoff valve a control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P224EAlternative Fuel Tank Shutoff Valve A Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP224E relates to alternative fuel tank shutoff valve a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P224FAlternative Fuel Tank Shutoff Valve A Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP224F relates to alternative fuel tank shutoff valve a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2264Water in Fuel Sensor A CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2264 relates to water in fuel sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2265Water in Fuel Sensor A Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2265 relates to water in fuel sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2266Water in Fuel Sensor A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2266 relates to water in fuel sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2267Water in Fuel Sensor A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2267 relates to water in fuel sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2268Water in Fuel Sensor A Circuit IntermittentCheck soonFuel System30–120 minutes for initial diagnosisP2268 relates to water in fuel sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2269Water in Fuel Condition - Sensor ACheck soonFuel System30–120 minutes for initial diagnosisP2269 relates to water in fuel condition - sensor a. Check the fault conditions and vehicle-specific procedure before replacing parts.P226AWater in Fuel Lamp Control CircuitCheck soonFuel System30–120 minutes for initial diagnosisP226A relates to water in fuel lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2283Injector Control Pressure Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2283 relates to injector control pressure sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2284Injector Control Pressure Sensor Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2284 relates to injector control pressure sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.