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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 5281–5304 of 7353

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P26DCEngine Sound Control A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26DC relates to engine sound control a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26DDEngine Sound Control A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26DD relates to engine sound control a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26DEEngine Sound Control A Circuit PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26DE relates to engine sound control a circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P26DFSensor Power Supply D Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26DF relates to sensor power supply d circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E0Sensor Power Supply D Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E0 relates to sensor power supply d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E1Sensor Power Supply D Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E1 relates to sensor power supply d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E2Fuel Mode Indicator Lamp Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP26E2 relates to fuel mode indicator lamp control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E3Fuel Mode Indicator Lamp Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP26E3 relates to fuel mode indicator lamp control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E4Starter Relay B CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E4 relates to starter relay b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E5Starter Relay B Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E5 relates to starter relay b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E6Starter Relay B Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E6 relates to starter relay b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E7Actuator Supply Voltage D Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E7 relates to actuator supply voltage d circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E8Actuator Supply Voltage D Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E8 relates to actuator supply voltage d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26E9Actuator Supply Voltage D Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26E9 relates to actuator supply voltage d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26EAFuel Pump Control Module BCheck soonFuel System30–120 minutes for initial diagnosisP26EA relates to fuel pump control module b. Check the fault conditions and vehicle-specific procedure before replacing parts.P26EBAlternative Fuel Control Module System VoltageCheck soonFuel System30–120 minutes for initial diagnosisP26EB relates to alternative fuel control module system voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P26ECEngine Sound Control B Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26EC relates to engine sound control b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P26EDEngine Sound Control B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26ED relates to engine sound control b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P26EEEngine Sound Control B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26EE relates to engine sound control b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26EFEngine Sound Control B Circuit PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP26EF relates to engine sound control b circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F0Starter Relay A Stuck OnCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26F0 relates to starter relay a stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F1Starter Relay A Stuck OffCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26F1 relates to starter relay a stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F2Starter Relay B Stuck OnCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26F2 relates to starter relay b stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P26F3Starter Relay B Stuck OffCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP26F3 relates to starter relay b stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.