Diagnostic library
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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 1657–1680 of 2110
P271APark Pawl Position Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP271BPark Pawl Position Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP271CPark Pawl Position Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP271DPark Pawl Position Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP272CPark Pawl Motor Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP272DPark Pawl Motor Control Circuit Current Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2745Intermediate Shaft Speed Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2746Intermediate Shaft Speed Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2747Intermediate Shaft Speed Sensor B Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2748Intermediate Shaft Speed Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2749Intermediate Shaft Speed Sensor C CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2750Intermediate Shaft Speed Sensor C Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2751Intermediate Shaft Speed Sensor C Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2752Intermediate Shaft Speed Sensor C Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2765Input/Turbine Shaft Speed Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2766Input/Turbine Shaft Speed Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2767Input/Turbine Shaft Speed Sensor B Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2768Input/Turbine Shaft Speed Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2771Four Wheel Drive (4WD) Low Switch CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2772Four Wheel Drive (4WD) Low Switch Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2773Four Wheel Drive (4WD) Low Switch Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2774Four Wheel Drive (4WD) Low Switch Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2784Input/Turbine Speed Sensor A/B CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP278AKick Down Switch CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosis