Diagnostic library
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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 7417–7440 of 8256
U040EInvalid Data Received From Turbocharger/Supercharger Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU040FInvalid Data Received From Reductant Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0410Invalid Data Received From Fuel Pump Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0411Invalid Data Received From Drive Motor Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0412Invalid Data Received From Battery Energy Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0413Invalid Data Received From Battery Energy Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0414Invalid Data Received From Four-Wheel Drive Clutch Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0415Invalid Data Received From Anti-Lock Brake System (ABS) Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0416Invalid Data Received From Vehicle Dynamics Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0417Invalid Data Received From Park Brake Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0418Invalid Data Received From Brake System Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0419Invalid Data Received From Steering Effort Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU041AInvalid Data Received From Battery Isolation/Voltage Stabilization Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU041BInvalid Data Received From Exhaust Gas Sensor Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU041CInvalid Data Received From Rocker Arm Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU041DInvalid Data Received From Rocker Arm Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU041EInvalid Data Received From All Wheel Drive Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU041FInvalid Data Received From Throttle Actuator B Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0420Invalid Data Received From Power Steering Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0421Invalid Data Received From Suspension Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0422Invalid Data Received From Body Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0423Invalid Data Received From Instrument Panel Cluster Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0424Invalid Data Received From HVAC Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0425Invalid Data Received From Auxiliary Heater Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosis