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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.

Low priority 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 298

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P0D78A/C Compressor Control Module Output Driver Temperature Sensor Circuit LowLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0D78 concerns a/c compressor control module output driver temperature sensor circuit low. Learn what this fault indicates and where to begin diagnosis.P0D79A/C Compressor Control Module Output Driver Temperature Sensor Circuit Intermittent/ErraticLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0D79 concerns a/c compressor control module output driver temperature sensor circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0EBCA/C Refrigerant Temperature Sensor A CircuitLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EBC concerns a/c refrigerant temperature sensor a circuit. Learn what this fault indicates and where to begin diagnosis.P0EBDA/C Refrigerant Temperature Sensor A Circuit HighLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EBD concerns a/c refrigerant temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0EBEA/C Refrigerant Temperature Sensor A Circuit LowLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EBE concerns a/c refrigerant temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0EBFA/C Refrigerant Temperature Sensor A Range/PerformanceLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EBF concerns a/c refrigerant temperature sensor a range/performance. Learn what this fault indicates and where to begin diagnosis.P0EC1A/C Refrigerant Temperature Sensor B CircuitLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC1 concerns a/c refrigerant temperature sensor b circuit. Learn what this fault indicates and where to begin diagnosis.P0EC2A/C Refrigerant Temperature Sensor B Circuit HighLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC2 concerns a/c refrigerant temperature sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.P0EC3A/C Refrigerant Temperature Sensor B Circuit LowLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC3 concerns a/c refrigerant temperature sensor b circuit low. Learn what this fault indicates and where to begin diagnosis.P0EC4A/C Refrigerant Temperature Sensor B Range/PerformanceLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC4 concerns a/c refrigerant temperature sensor b range/performance. Learn what this fault indicates and where to begin diagnosis.P0EC6A/C Power Supply Relay Control Circuit/OpenLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC6 concerns a/c power supply relay control circuit/open. Learn what this fault indicates and where to begin diagnosis.P0EC7A/C Power Supply Relay Control Circuit LowLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC7 concerns a/c power supply relay control circuit low. Learn what this fault indicates and where to begin diagnosis.P0EC8A/C Power Supply Relay Control Circuit HighLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC8 concerns a/c power supply relay control circuit high. Learn what this fault indicates and where to begin diagnosis.P0EC9A/C Refrigerant Distribution Valve A Stuck/OpenLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EC9 concerns a/c refrigerant distribution valve a stuck/open. Learn what this fault indicates and where to begin diagnosis.P0EE2A/C Refrigerant Distribution Valve B Stuck/OpenLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EE2 concerns a/c refrigerant distribution valve b stuck/open. Learn what this fault indicates and where to begin diagnosis.P0EE3A/C Refrigerant Distribution Valve B Control Circuit/OpenLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EE3 concerns a/c refrigerant distribution valve b control circuit/open. Learn what this fault indicates and where to begin diagnosis.P0EE4A/C Refrigerant Distribution Valve B Control Circuit LowLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EE4 concerns a/c refrigerant distribution valve b control circuit low. Learn what this fault indicates and where to begin diagnosis.P0EE5A/C Refrigerant Distribution Valve B Control Circuit HighLow priorityElectrical & Charging System45–120 minutes for initial diagnosisP0EE5 concerns a/c refrigerant distribution valve b control circuit high. Learn what this fault indicates and where to begin diagnosis.P2024EVAP Fuel Vapor Temperature Sensor CircuitLow priorityEmissions System30–120 minutes for initial diagnosisP2024 relates to evap fuel vapor temperature sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2025EVAP Fuel Vapor Temperature Sensor PerformanceLow priorityEmissions System30–120 minutes for initial diagnosisP2025 relates to evap fuel vapor temperature sensor performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2026EVAP Fuel Vapor Temperature Sensor Circuit Low VoltageLow priorityEmissions System30–120 minutes for initial diagnosisP2026 relates to evap fuel vapor temperature sensor circuit low voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P2028EVAP Fuel Vapor Temperature Sensor Circuit IntermittentLow priorityEmissions System30–120 minutes for initial diagnosisP2028 relates to evap fuel vapor temperature sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2065Fuel Level Sensor B CircuitLow priorityFuel System30–120 minutes for initial diagnosisP2065 relates to fuel level sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2066Fuel Level Sensor B PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP2066 relates to fuel level sensor b performance. Check the fault conditions and vehicle-specific procedure before replacing parts.