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Search the code from your scanner, then narrow the library by system, severity, or code family.
9,253 diagnostic guides
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh 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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 1–24 of 1570
P005ETurbocharger/Supercharger Boost Control B Supply Voltage Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP005FTurbocharger/Supercharger Boost Control B Supply Voltage Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP006ETurbocharger/Supercharger Boost Control A Supply Voltage Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP006FTurbocharger/Supercharger Boost Control A Supply Voltage Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP00FDBattery B State of Charge PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP01F2O2 Sensor Circuit Low Voltage Bank 1 Sensor 4Check soonElectrical & Charging System30–120 minutes for initial diagnosisP01F3O2 Sensor Circuit High Voltage Bank 1 Sensor 4Check soonElectrical & Charging System30–120 minutes for initial diagnosisP0512Starter Request CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0513Incorrect Immobilizer KeyCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0514Battery Temperature Sensor Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0515Battery Temperature Sensor CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0516Battery Temperature Sensor Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0517Battery Temperature Sensor Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP052FGlow Plug Control Module 1 System VoltageCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0540Intake Air Heater A CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0541Intake Air Heater A Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0542Intake Air Heater A Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0543Intake Air Heater A Circuit OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP0561System Voltage UnstableCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP056DReductant Control Module System VoltageCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP057FBattery A State of Charge PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP058ABattery Monitor Module PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP058BBattery Monitor Module Current Monitoring PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP058CBattery Monitor Module Temperature Monitoring PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosis