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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 793–816 of 2110

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P0936Hydraulic Pressure Sensor Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0936 relates to hydraulic pressure sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0937Hydraulic Oil Temperature Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0937 relates to hydraulic oil temperature sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0938Hydraulic Oil Temperature Sensor Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0938 relates to hydraulic oil temperature sensor range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0939Hydraulic Oil Temperature Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0939 relates to hydraulic oil temperature sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P093AHydraulic Accumulator Solenoid Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP093A relates to hydraulic accumulator solenoid circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P093BHydraulic Accumulator Solenoid Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP093B relates to hydraulic accumulator solenoid circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P093CHydraulic Accumulator Solenoid Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP093C relates to hydraulic accumulator solenoid circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P093DHydraulic Accumulator Solenoid PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP093D relates to hydraulic accumulator solenoid performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0940Hydraulic Oil Temperature Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0940 relates to hydraulic oil temperature sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0941Hydraulic Oil Temperature Sensor Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0941 relates to hydraulic oil temperature sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0942Hydraulic Pressure UnitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0942 relates to hydraulic pressure unit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0943Hydraulic Pressure Unit Cycling Period Too ShortCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0943 relates to hydraulic pressure unit cycling period too short. Check the fault conditions and vehicle-specific procedure before replacing parts.P0944Hydraulic Pressure Unit Loss of PressureCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0944 relates to hydraulic pressure unit loss of pressure. Check the fault conditions and vehicle-specific procedure before replacing parts.P094AHydraulic Pump Driver PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP094A relates to hydraulic pump driver performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P094BHydraulic Pump Stuck OnCheck soonSensors & Electronics30–120 minutes for initial diagnosisP094B relates to hydraulic pump stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P094CHydraulic Pump Performance/Stuck OffCheck soonSensors & Electronics30–120 minutes for initial diagnosisP094C relates to hydraulic pump performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P094DHydraulic Pump Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP094D relates to hydraulic pump over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A2Gate Select Position Circuit BCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A2 relates to gate select position circuit b. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A3Gate Select Position Circuit B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A3 relates to gate select position circuit b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A4Gate Select Position Circuit B LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A4 relates to gate select position circuit b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A5Gate Select Position Circuit B HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A5 relates to gate select position circuit b high. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A6Gate Select Position Circuit CCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A6 relates to gate select position circuit c. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A7Gate Select Position Circuit C Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A7 relates to gate select position circuit c range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A8Gate Select Position Circuit C LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A8 relates to gate select position circuit c low. Check the fault conditions and vehicle-specific procedure before replacing parts.