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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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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 337–360 of 987

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P06DBEngine Oil Pressure Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP06DB relates to engine oil pressure control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06DCEngine Oil Pressure Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP06DC relates to engine oil pressure control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06DDEngine Oil Pressure Control Circuit Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP06DD relates to engine oil pressure control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P06DEEngine Oil Pressure Control Circuit Stuck OnCheck soonEngine Problems30–120 minutes for initial diagnosisP06DE relates to engine oil pressure control circuit stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E0Cylinder 11 Glow Plug Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP06E0 relates to cylinder 11 glow plug control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E1Cylinder 11 Glow Plug Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP06E1 relates to cylinder 11 glow plug control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E2Cylinder 12 Glow Plug Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP06E2 relates to cylinder 12 glow plug control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E3Cylinder 12 Glow Plug Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP06E3 relates to cylinder 12 glow plug control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0726Engine Speed Input Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0726 relates to engine speed input circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0727Engine Speed Input Circuit No SignalCheck soonEngine Problems30–120 minutes for initial diagnosisP0727 relates to engine speed input circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P0728Engine Speed Input Circuit IntermittentCheck soonEngine Problems30–120 minutes for initial diagnosisP0728 relates to engine speed input circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0737TCM Engine Speed Output CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP0737 relates to tcm engine speed output circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0738TCM Engine Speed Output Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP0738 relates to tcm engine speed output circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0739TCM Engine Speed Output Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP0739 relates to tcm engine speed output circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2088A Camshaft Position Actuator Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2088 relates to a camshaft position actuator control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2089A Camshaft Position Actuator Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2089 relates to a camshaft position actuator control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2090B Camshaft Position Actuator Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2090 relates to b camshaft position actuator control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2091B Camshaft Position Actuator Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2091 relates to b camshaft position actuator control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2092A Camshaft Position Actuator Control Circuit Low Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2092 relates to a camshaft position actuator control circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2093A Camshaft Position Actuator Control Circuit High Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2093 relates to a camshaft position actuator control circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2094B Camshaft Position Actuator Control Circuit Low Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2094 relates to b camshaft position actuator control circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2095B Camshaft Position Actuator Control Circuit High Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2095 relates to b camshaft position actuator control circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P20B1Reductant Heater Coolant Control Valve Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP20B1 relates to reductant heater coolant control valve circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P20B2Reductant Heater Coolant Control Valve Performance/Stuck OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP20B2 relates to reductant heater coolant control valve performance/stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.