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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.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 25–26 of 26

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P2EA9DC/AC Converter A Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP2EA9 relates to dc/ac converter a over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2EABActive Radiator Air Flow Control Module A Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP2EAB relates to active radiator air flow control module a over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.