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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 505–528 of 1228

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U0402Invalid Data Received From TCMCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0402 concerns invalid data received from tcm. Learn what this fault indicates and where to begin diagnosis.U0403Invalid Data Received From Transfer Case Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0403 concerns invalid data received from transfer case control module. Learn what this fault indicates and where to begin diagnosis.U0404Invalid Data Received From Gear Shift Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0404 concerns invalid data received from gear shift control module a. Learn what this fault indicates and where to begin diagnosis.U0405Invalid Data Received From Cruise Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0405 concerns invalid data received from cruise control module. Learn what this fault indicates and where to begin diagnosis.U0406Invalid Data Received From Fuel Injector Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0406 concerns invalid data received from fuel injector control module. Learn what this fault indicates and where to begin diagnosis.U0407Invalid Data Received From Glow Plug Control Module 1Check soonNetwork & Communication45–120 minutes for initial diagnosisU0407 concerns invalid data received from glow plug control module 1. Learn what this fault indicates and where to begin diagnosis.U0408Invalid Data Received From Throttle Actuator A Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0408 concerns invalid data received from throttle actuator a control module. Learn what this fault indicates and where to begin diagnosis.U0409Invalid Data Received From Alternative Fuel Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0409 concerns invalid data received from alternative fuel control module. Learn what this fault indicates and where to begin diagnosis.U040AInvalid Data Received From Air Conditioning Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU040A concerns invalid data received from air conditioning control module. Learn what this fault indicates and where to begin diagnosis.U040BInvalid Data Received From Exhaust Gas Recirculation Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU040B concerns invalid data received from exhaust gas recirculation control module a. Learn what this fault indicates and where to begin diagnosis.U040CInvalid Data Received From Exhaust Gas Recirculation Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU040C concerns invalid data received from exhaust gas recirculation control module b. Learn what this fault indicates and where to begin diagnosis.U040DInvalid Data Received From Turbocharger/Supercharger Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU040D concerns invalid data received from turbocharger/supercharger control module a. Learn what this fault indicates and where to begin diagnosis.U040EInvalid Data Received From Turbocharger/Supercharger Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU040E concerns invalid data received from turbocharger/supercharger control module b. Learn what this fault indicates and where to begin diagnosis.U040FInvalid Data Received From Reductant Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU040F concerns invalid data received from reductant control module. Learn what this fault indicates and where to begin diagnosis.U0410Invalid Data Received From Fuel Pump Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0410 concerns invalid data received from fuel pump control module a. Learn what this fault indicates and where to begin diagnosis.U0411Invalid Data Received From Drive Motor Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0411 concerns invalid data received from drive motor control module a. Learn what this fault indicates and where to begin diagnosis.U0412Invalid Data Received From Battery Energy Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0412 concerns invalid data received from battery energy control module a. Learn what this fault indicates and where to begin diagnosis.U0413Invalid Data Received From Battery Energy Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0413 concerns invalid data received from battery energy control module b. Learn what this fault indicates and where to begin diagnosis.U0414Invalid Data Received From Four-Wheel Drive Clutch Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0414 concerns invalid data received from four-wheel drive clutch control module. Learn what this fault indicates and where to begin diagnosis.U0415Invalid Data Received From Anti-Lock Brake System (ABS) Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0415 concerns invalid data received from anti-lock brake system (abs) control module. Learn what this fault indicates and where to begin diagnosis.U0416Invalid Data Received From Vehicle Dynamics Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0416 concerns invalid data received from vehicle dynamics control module. Learn what this fault indicates and where to begin diagnosis.U0417Invalid Data Received From Park Brake Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0417 concerns invalid data received from park brake control module. Learn what this fault indicates and where to begin diagnosis.U0418Invalid Data Received From Brake System Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0418 concerns invalid data received from brake system control module a. Learn what this fault indicates and where to begin diagnosis.U0419Invalid Data Received From Steering Effort Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0419 concerns invalid data received from steering effort control module. Learn what this fault indicates and where to begin diagnosis.