Diagnostic library

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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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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 529–552 of 1223

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U041EInvalid Data Received From All Wheel Drive Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU041E concerns invalid data received from all wheel drive control module. Learn what this fault indicates and where to begin diagnosis.U041FInvalid Data Received From Throttle Actuator B Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU041F concerns invalid data received from throttle actuator b control module. Learn what this fault indicates and where to begin diagnosis.U0420Invalid Data Received From Power Steering Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0420 concerns invalid data received from power steering control module a. Learn what this fault indicates and where to begin diagnosis.U0421Invalid Data Received From Suspension Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0421 concerns invalid data received from suspension control module a. Learn what this fault indicates and where to begin diagnosis.U0422Invalid Data Received From Body Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0422 concerns invalid data received from body control module. Learn what this fault indicates and where to begin diagnosis.U0423Invalid Data Received From Instrument Panel Cluster Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0423 concerns invalid data received from instrument panel cluster control module. Learn what this fault indicates and where to begin diagnosis.U0424Invalid Data Received From HVAC Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0424 concerns invalid data received from hvac control module. Learn what this fault indicates and where to begin diagnosis.U0425Invalid Data Received From Auxiliary Heater Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0425 concerns invalid data received from auxiliary heater control module. Learn what this fault indicates and where to begin diagnosis.U0426Invalid Data Received From Vehicle Immobilizer Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0426 concerns invalid data received from vehicle immobilizer control module. Learn what this fault indicates and where to begin diagnosis.U0427Invalid Data Received From Vehicle Security Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0427 concerns invalid data received from vehicle security control module. Learn what this fault indicates and where to begin diagnosis.U0428Invalid Data Received From Steering Angle Sensor ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0428 concerns invalid data received from steering angle sensor module. Learn what this fault indicates and where to begin diagnosis.U0429Invalid Data Received From Steering Column Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0429 concerns invalid data received from steering column control module. Learn what this fault indicates and where to begin diagnosis.U042AInvalid Data Received From V2X ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU042A concerns invalid data received from v2x module. Learn what this fault indicates and where to begin diagnosis.U042BInvalid Data Received From Chassis Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU042B concerns invalid data received from chassis control module a. Learn what this fault indicates and where to begin diagnosis.U042CInvalid Data Received From Chassis Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU042C concerns invalid data received from chassis control module b. Learn what this fault indicates and where to begin diagnosis.U042DInvalid Data Received from Active Vibration Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU042D concerns invalid data received from active vibration control module. Learn what this fault indicates and where to begin diagnosis.U042EInvalid Data Received From Generator A Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU042E concerns invalid data received from generator a control module. Learn what this fault indicates and where to begin diagnosis.U042FInvalid Data Received From Camshaft Position Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU042F concerns invalid data received from camshaft position control module. Learn what this fault indicates and where to begin diagnosis.U0430Invalid Data Received From Tire Pressure Monitor ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0430 concerns invalid data received from tire pressure monitor module. Learn what this fault indicates and where to begin diagnosis.U0431Invalid Data Received From Body Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0431 concerns invalid data received from body control module a. Learn what this fault indicates and where to begin diagnosis.U0432Invalid Data Received From Multi-axis Acceleration Sensor Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0432 concerns invalid data received from multi-axis acceleration sensor module a. Learn what this fault indicates and where to begin diagnosis.U0433Invalid Data Received From Front Distance Range Sensor - Single Sensor or CenterCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0433 concerns invalid data received from front distance range sensor - single sensor or center. Learn what this fault indicates and where to begin diagnosis.U0434Invalid Data Received From Active Roll Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0434 concerns invalid data received from active roll control module. Learn what this fault indicates and where to begin diagnosis.U0435Invalid Data Received From Power Steering Control Module - RearCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0435 concerns invalid data received from power steering control module - rear. Learn what this fault indicates and where to begin diagnosis.