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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 433–456 of 1228

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U030ASoftware Incompatibility With Evaporative Emission System Leak Detection Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU030A concerns software incompatibility with evaporative emission system leak detection control module. Learn what this fault indicates and where to begin diagnosis.U030BSoftware Incompatibility With Glow Plug Control Module 2Check soonNetwork & Communication45–120 minutes for initial diagnosisU030B concerns software incompatibility with glow plug control module 2. Learn what this fault indicates and where to begin diagnosis.U030CSoftware Incompatibility With Reductant Quality ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU030C concerns software incompatibility with reductant quality module. Learn what this fault indicates and where to begin diagnosis.U030DSoftware Incompatibility With NOx Sensor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU030D concerns software incompatibility with nox sensor a. Learn what this fault indicates and where to begin diagnosis.U030ESoftware Incompatibility With NOx Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU030E concerns software incompatibility with nox sensor b. Learn what this fault indicates and where to begin diagnosis.U030FSoftware Incompatibility With Reductant Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU030F concerns software incompatibility with reductant control module. Learn what this fault indicates and where to begin diagnosis.U0310Software Incompatibility With Fuel Pump Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0310 concerns software incompatibility with fuel pump control module. Learn what this fault indicates and where to begin diagnosis.U0311Software Incompatibility With Drive Motor Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0311 concerns software incompatibility with drive motor control module. Learn what this fault indicates and where to begin diagnosis.U0312Software Incompatibility With Battery Energy Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0312 concerns software incompatibility with battery energy control module a. Learn what this fault indicates and where to begin diagnosis.U0313Software Incompatibility With Battery Energy Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0313 concerns software incompatibility with battery energy control module b. Learn what this fault indicates and where to begin diagnosis.U0314Software Incompatibility With Four-Wheel Drive Clutch Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0314 concerns software incompatibility with four-wheel drive clutch control module. Learn what this fault indicates and where to begin diagnosis.U0315Software Incompatibility With Anti-Lock Brake System (ABS) Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0315 concerns software incompatibility with anti-lock brake system (abs) control module. Learn what this fault indicates and where to begin diagnosis.U0316Software Incompatibility With Vehicle Dynamics Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0316 concerns software incompatibility with vehicle dynamics control module. Learn what this fault indicates and where to begin diagnosis.U0317Software Incompatibility With Park Brake Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0317 concerns software incompatibility with park brake control module. Learn what this fault indicates and where to begin diagnosis.U0318Software Incompatibility With Brake System Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0318 concerns software incompatibility with brake system control module a. Learn what this fault indicates and where to begin diagnosis.U0319Software Incompatibility With Steering Effort Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0319 concerns software incompatibility with steering effort control module. Learn what this fault indicates and where to begin diagnosis.U031ASoftware Incompatibility With Transmission Range Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU031A concerns software incompatibility with transmission range control module. Learn what this fault indicates and where to begin diagnosis.U031BSoftware Incompatibility With DC/DC Converter Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU031B concerns software incompatibility with dc/dc converter control module a. Learn what this fault indicates and where to begin diagnosis.U031CSoftware Incompatibility With Brake System Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU031C concerns software incompatibility with brake system control module b. Learn what this fault indicates and where to begin diagnosis.U031DSoftware Incompatibility With Parking Assist Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU031D concerns software incompatibility with parking assist control module a. Learn what this fault indicates and where to begin diagnosis.U031ESoftware Incompatibility With Parking Assist Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU031E concerns software incompatibility with parking assist control module b. Learn what this fault indicates and where to begin diagnosis.U031FSoftware Incompatibility With Accessory Protocol Interface ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU031F concerns software incompatibility with accessory protocol interface module. Learn what this fault indicates and where to begin diagnosis.U0320Software Incompatibility With Power Steering Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0320 concerns software incompatibility with power steering control module. Learn what this fault indicates and where to begin diagnosis.U0321Software Incompatibility With Suspension Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0321 concerns software incompatibility with suspension control module a. Learn what this fault indicates and where to begin diagnosis.