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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

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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 313–336 of 378

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P24F7Exhaust Aftertreatment Fuel Air Purge Valve Stuck ClosedCheck soonEmissions System30–120 minutes for initial diagnosisP24F7 relates to exhaust aftertreatment fuel air purge valve stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P24F8Exhaust Aftertreatment Fuel Air Purge Valve Control CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP24F8 relates to exhaust aftertreatment fuel air purge valve control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P24F9Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP24F9 relates to exhaust aftertreatment fuel air purge valve control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P24FAExhaust Aftertreatment Fuel Air Purge Valve Control Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP24FA relates to exhaust aftertreatment fuel air purge valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P24FBExhaust Aftertreatment Fuel Air Purge Valve Control Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP24FB relates to exhaust aftertreatment fuel air purge valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P24FCParticulate Matter Sensor Heater Control Circuit Driver Current/Temperature Too HighCheck soonEmissions System30–120 minutes for initial diagnosisP24FC relates to particulate matter sensor heater control circuit driver current/temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P24FDParticulate Filter A IncorrectCheck soonEmissions System30–120 minutes for initial diagnosisP24FD relates to particulate filter a incorrect. Check the fault conditions and vehicle-specific procedure before replacing parts.P24FESCR Catalyst IncorrectCheck soonEmissions System30–120 minutes for initial diagnosisP24FE relates to scr catalyst incorrect. Check the fault conditions and vehicle-specific procedure before replacing parts.P2567Direct Ozone Reduction Catalyst Temperature Sensor CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP2567 relates to direct ozone reduction catalyst temperature sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2568Direct Ozone Reduction Catalyst Temperature Sensor Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2568 relates to direct ozone reduction catalyst temperature sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2569Direct Ozone Reduction Catalyst Temperature Sensor Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2569 relates to direct ozone reduction catalyst temperature sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2570Direct Ozone Reduction Catalyst Temperature Sensor Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2570 relates to direct ozone reduction catalyst temperature sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2571Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2571 relates to direct ozone reduction catalyst temperature sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2572Direct Ozone Reduction Catalyst Deterioration Sensor CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP2572 relates to direct ozone reduction catalyst deterioration sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2573Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2573 relates to direct ozone reduction catalyst deterioration sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2574Direct Ozone Reduction Catalyst Deterioration Sensor Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2574 relates to direct ozone reduction catalyst deterioration sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2575Direct Ozone Reduction Catalyst Deterioration Sensor Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2575 relates to direct ozone reduction catalyst deterioration sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2576Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2576 relates to direct ozone reduction catalyst deterioration sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P260EParticulate Filter Regeneration Lamp Control CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP260E relates to particulate filter regeneration lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P26FBEGR Cooler Bypass Control Stuck Closed Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP26FB relates to egr cooler bypass control stuck closed bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P26FCEGR Cooler Bypass Control Stuck Closed Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP26FC relates to egr cooler bypass control stuck closed bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AA3Cold Start EGR B Flow Insufficient DetectedCheck soonEmissions System30–120 minutes for initial diagnosisP2AA3 relates to cold start egr b flow insufficient detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AA4Cold Start EGR B Flow Excessive DetectedCheck soonEmissions System30–120 minutes for initial diagnosisP2AA4 relates to cold start egr b flow excessive detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AA5EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2AA5 relates to egr cooler bypass control circuit driver current/temperature too high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.