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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.

Urgent P · Powertrain 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 145–168 of 302

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P0C30Hybrid/EV Battery Pack State of Charge HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C30 concerns hybrid/ev battery pack state of charge high. Learn what this fault indicates and where to begin diagnosis.P0C42Hybrid/EV Battery Pack Coolant Temperature Sensor A CircuitUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C42 concerns hybrid/ev battery pack coolant temperature sensor a circuit. Learn what this fault indicates and where to begin diagnosis.P0C43Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit Range/PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C43 concerns hybrid/ev battery pack coolant temperature sensor a circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0C44Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C44 concerns hybrid/ev battery pack coolant temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0C45Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C45 concerns hybrid/ev battery pack coolant temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0C46Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit Intermittent/ErraticUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C46 concerns hybrid/ev battery pack coolant temperature sensor a circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0C47Hybrid/EV Battery Pack Coolant Pump A Control Circuit/OpenUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C47 concerns hybrid/ev battery pack coolant pump a control circuit/open. Learn what this fault indicates and where to begin diagnosis.P0C48Hybrid/EV Battery Pack Coolant Pump A Control Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C48 concerns hybrid/ev battery pack coolant pump a control circuit low. Learn what this fault indicates and where to begin diagnosis.P0C49Hybrid/EV Battery Pack Coolant Pump A Control Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C49 concerns hybrid/ev battery pack coolant pump a control circuit high. Learn what this fault indicates and where to begin diagnosis.P0C4AHybrid/EV Battery Pack Coolant Pump A Control PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C4A concerns hybrid/ev battery pack coolant pump a control performance. Learn what this fault indicates and where to begin diagnosis.P0C4BHybrid/EV Battery Pack Coolant Pump A Supply Voltage Circuit/OpenUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C4B concerns hybrid/ev battery pack coolant pump a supply voltage circuit/open. Learn what this fault indicates and where to begin diagnosis.P0C4CHybrid/EV Battery Pack Coolant Pump A Supply Voltage Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C4C concerns hybrid/ev battery pack coolant pump a supply voltage circuit low. Learn what this fault indicates and where to begin diagnosis.P0C4DHybrid/EV Battery Pack Coolant Pump A Supply Voltage Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0C4D concerns hybrid/ev battery pack coolant pump a supply voltage circuit high. Learn what this fault indicates and where to begin diagnosis.P0CD5Hybrid/EV Battery Pack Coolant Temperature Sensor B CircuitUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CD5 concerns hybrid/ev battery pack coolant temperature sensor b circuit. Learn what this fault indicates and where to begin diagnosis.P0CD6Hybrid/EV Battery Pack Coolant Temperature Sensor B Circuit Range/PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CD6 concerns hybrid/ev battery pack coolant temperature sensor b circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0CD7Hybrid/EV Battery Pack Coolant Temperature Sensor B Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CD7 concerns hybrid/ev battery pack coolant temperature sensor b circuit low. Learn what this fault indicates and where to begin diagnosis.P0CD8Hybrid/EV Battery Pack Coolant Temperature Sensor B Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CD8 concerns hybrid/ev battery pack coolant temperature sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.P0CD9Hybrid/EV Battery Pack Coolant Temperature Sensor B Circuit Intermittent/ErraticUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CD9 concerns hybrid/ev battery pack coolant temperature sensor b circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0CDFHybrid/EV Battery Pack Coolant Control Valve A Control Circuit/OpenUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CDF concerns hybrid/ev battery pack coolant control valve a control circuit/open. Learn what this fault indicates and where to begin diagnosis.P0CE0Hybrid/EV Battery Pack Coolant Control Valve A Performance/Stuck OffUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CE0 concerns hybrid/ev battery pack coolant control valve a performance/stuck off. Learn what this fault indicates and where to begin diagnosis.P0CE1Hybrid/EV Battery Pack Coolant Control Valve A Stuck OnUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CE1 concerns hybrid/ev battery pack coolant control valve a stuck on. Learn what this fault indicates and where to begin diagnosis.P0CE2Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CE2 concerns hybrid/ev battery pack coolant control valve a control circuit low. Learn what this fault indicates and where to begin diagnosis.P0CE3Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CE3 concerns hybrid/ev battery pack coolant control valve a control circuit high. Learn what this fault indicates and where to begin diagnosis.P0CE4Hybrid/EV Battery Pack Coolant Control Valve Position Sensor CircuitUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0CE4 concerns hybrid/ev battery pack coolant control valve position sensor circuit. Learn what this fault indicates and where to begin diagnosis.