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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.

Electrical & Charging System 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 97–120 of 1797

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P06D2Sensor Reference Voltage E Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D2 relates to sensor reference voltage e circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D3Sensor Reference Voltage E Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D3 relates to sensor reference voltage e circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D4Sensor Reference Voltage E Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D4 relates to sensor reference voltage e circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D5Sensor Reference Voltage E Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D5 relates to sensor reference voltage e circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D6Sensor Reference Voltage F Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D6 relates to sensor reference voltage f circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D7Sensor Reference Voltage F Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D7 relates to sensor reference voltage f circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D8Sensor Reference Voltage F Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D8 relates to sensor reference voltage f circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06D9Sensor Reference Voltage F Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06D9 relates to sensor reference voltage f circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E6Sensor Power Supply C Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06E6 relates to sensor power supply c circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E7Sensor Power Supply C Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06E7 relates to sensor power supply c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06E8Sensor Power Supply C Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06E8 relates to sensor power supply c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06F9Glow Plug Control Module 2 System VoltageCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06F9 relates to glow plug control module 2 system voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P0885TCM Power Relay Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0885 relates to tcm power relay control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0886TCM Power Relay Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0886 relates to tcm power relay control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0887TCM Power Relay Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0887 relates to tcm power relay control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0888TCM Power Relay Sense CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0888 relates to tcm power relay sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0889TCM Power Relay Sense Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0889 relates to tcm power relay sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0890TCM Power Relay Sense Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0890 relates to tcm power relay sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0891TCM Power Relay Sense Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0891 relates to tcm power relay sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0892TCM Power Relay Sense Circuit IntermittentCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0892 relates to tcm power relay sense circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0945Hydraulic Pump Relay/Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0945 relates to hydraulic pump relay/control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0946Hydraulic Pump Relay/Control Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0946 relates to hydraulic pump relay/control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0947Hydraulic Pump Relay/Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0947 relates to hydraulic pump relay/control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0948Hydraulic Pump Relay/Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0948 relates to hydraulic pump relay/control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.