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

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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

FiltersSeverity · family

Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

Vehicle coverage

These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 457–480 of 1223

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U0326Software Incompatibility With Vehicle Immobilizer Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0326 concerns software incompatibility with vehicle immobilizer control module. Learn what this fault indicates and where to begin diagnosis.U0327Software Incompatibility With Vehicle Security Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0327 concerns software incompatibility with vehicle security control module. Learn what this fault indicates and where to begin diagnosis.U0328Software Incompatibility With Steering Angle Sensor ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0328 concerns software incompatibility with steering angle sensor module. Learn what this fault indicates and where to begin diagnosis.U0329Software Incompatibility With Steering Column Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0329 concerns software incompatibility with steering column control module. Learn what this fault indicates and where to begin diagnosis.U032ASoftware Incompatibility With A/C Compressor Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU032A concerns software incompatibility with a/c compressor control module. Learn what this fault indicates and where to begin diagnosis.U0330Software Incompatibility With Tire Pressure Monitor ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0330 concerns software incompatibility with tire pressure monitor module. Learn what this fault indicates and where to begin diagnosis.U0331Software Incompatibility With Body Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0331 concerns software incompatibility with body control module a. Learn what this fault indicates and where to begin diagnosis.U0332Software Incompatibility With Multi-axis Acceleration Sensor Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0332 concerns software incompatibility with multi-axis acceleration sensor module a. Learn what this fault indicates and where to begin diagnosis.U0333Software Incompatibility With Gear Shift Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0333 concerns software incompatibility with gear shift control module b. Learn what this fault indicates and where to begin diagnosis.U0334Software Incompatibility With RadioCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0334 concerns software incompatibility with radio. Learn what this fault indicates and where to begin diagnosis.U0335Software Incompatibility With Hybrid/EV Battery Pack Sensor ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0335 concerns software incompatibility with hybrid/ev battery pack sensor module. Learn what this fault indicates and where to begin diagnosis.U0336Software Incompatibility With Restraints Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0336 concerns software incompatibility with restraints control module. Learn what this fault indicates and where to begin diagnosis.U0337Software Incompatibility With Battery Charger Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0337 concerns software incompatibility with battery charger control module a. Learn what this fault indicates and where to begin diagnosis.U0338Software Incompatibility With Remote Function Actuation ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0338 concerns software incompatibility with remote function actuation module. Learn what this fault indicates and where to begin diagnosis.U0339Software Incompatibility With Body Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0339 concerns software incompatibility with body control module b. Learn what this fault indicates and where to begin diagnosis.U033ASoftware Incompatibility With Hybrid/EV Battery Interface Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU033A concerns software incompatibility with hybrid/ev battery interface control module a. Learn what this fault indicates and where to begin diagnosis.U033BSoftware Incompatibility With Hybrid/EV Battery Interface Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU033B concerns software incompatibility with hybrid/ev battery interface control module b. Learn what this fault indicates and where to begin diagnosis.U033CSoftware Incompatibility With Hybrid/EV Battery Interface Control Module CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU033C concerns software incompatibility with hybrid/ev battery interface control module c. Learn what this fault indicates and where to begin diagnosis.U033DSoftware Incompatibility With Hybrid/EV Battery Interface Control Module DCheck soonNetwork & Communication45–120 minutes for initial diagnosisU033D concerns software incompatibility with hybrid/ev battery interface control module d. Learn what this fault indicates and where to begin diagnosis.U033ESoftware Incompatibility With Hybrid/EV Battery Interface Control Module ECheck soonNetwork & Communication45–120 minutes for initial diagnosisU033E concerns software incompatibility with hybrid/ev battery interface control module e. Learn what this fault indicates and where to begin diagnosis.U033FSoftware Incompatibility With Hybrid/EV Battery Interface Control Module FCheck soonNetwork & Communication45–120 minutes for initial diagnosisU033F concerns software incompatibility with hybrid/ev battery interface control module f. Learn what this fault indicates and where to begin diagnosis.U0340Software Incompatibility With Hybrid/EV Battery Interface Control Module GCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0340 concerns software incompatibility with hybrid/ev battery interface control module g. Learn what this fault indicates and where to begin diagnosis.U0341Software Incompatibility With Hybrid/EV Battery Interface Control Module HCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0341 concerns software incompatibility with hybrid/ev battery interface control module h. Learn what this fault indicates and where to begin diagnosis.U0342Software Incompatibility With Hybrid/EV Battery Interface Control Module ICheck soonNetwork & Communication45–120 minutes for initial diagnosisU0342 concerns software incompatibility with hybrid/ev battery interface control module i. Learn what this fault indicates and where to begin diagnosis.