Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

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.

Check soon Clear all

Quick browse

Choose a vehicle system

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 6985–7008 of 8256

Most searched first

U0082Vehicle Communication Bus F + OpenCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0082 concerns vehicle communication bus f + open. Learn what this fault indicates and where to begin diagnosis.U0083Vehicle Communication Bus F + LowCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0083 concerns vehicle communication bus f + low. Learn what this fault indicates and where to begin diagnosis.U0084Vehicle Communication Bus F + HighCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0084 concerns vehicle communication bus f + high. Learn what this fault indicates and where to begin diagnosis.U0085Vehicle Communication Bus F - OpenCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0085 concerns vehicle communication bus f - open. Learn what this fault indicates and where to begin diagnosis.U0086Vehicle Communication Bus F - LowCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0086 concerns vehicle communication bus f - low. Learn what this fault indicates and where to begin diagnosis.U0087Vehicle Communication Bus F - HighCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0087 concerns vehicle communication bus f - high. Learn what this fault indicates and where to begin diagnosis.U0088Vehicle Communication Bus F - Shorted to Bus F +Check soonNetwork & Communication45–120 minutes for initial diagnosisU0088 concerns vehicle communication bus f - shorted to bus f +. Learn what this fault indicates and where to begin diagnosis.U0089Vehicle Communication Bus GCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0089 concerns vehicle communication bus g. Learn what this fault indicates and where to begin diagnosis.U008AVehicle Communication Bus G PerformanceCheck soonNetwork & Communication45–120 minutes for initial diagnosisU008A concerns vehicle communication bus g performance. Learn what this fault indicates and where to begin diagnosis.U008BVehicle Communication Bus G (+) OpenCheck soonNetwork & Communication45–120 minutes for initial diagnosisU008B concerns vehicle communication bus g (+) open. Learn what this fault indicates and where to begin diagnosis.U008CVehicle Communication Bus G (+) LowCheck soonNetwork & Communication45–120 minutes for initial diagnosisU008C concerns vehicle communication bus g (+) low. Learn what this fault indicates and where to begin diagnosis.U008DVehicle Communication Bus G (+) HighCheck soonNetwork & Communication45–120 minutes for initial diagnosisU008D concerns vehicle communication bus g (+) high. Learn what this fault indicates and where to begin diagnosis.U008EVehicle Communication Bus G (-) OpenCheck soonNetwork & Communication45–120 minutes for initial diagnosisU008E concerns vehicle communication bus g (-) open. Learn what this fault indicates and where to begin diagnosis.U008FVehicle Communication Bus G (-) LowCheck soonNetwork & Communication45–120 minutes for initial diagnosisU008F concerns vehicle communication bus g (-) low. Learn what this fault indicates and where to begin diagnosis.U0090Vehicle Communication Bus G (-) HighCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0090 concerns vehicle communication bus g (-) high. Learn what this fault indicates and where to begin diagnosis.U0091Vehicle Communication Bus G (-) shorted to Bus G (+)Check soonNetwork & Communication45–120 minutes for initial diagnosisU0091 concerns vehicle communication bus g (-) shorted to bus g (+). Learn what this fault indicates and where to begin diagnosis.U0092Vehicle Communication Bus HCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0092 concerns vehicle communication bus h. Learn what this fault indicates and where to begin diagnosis.U0093Vehicle Communication Bus H PerformanceCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0093 concerns vehicle communication bus h performance. Learn what this fault indicates and where to begin diagnosis.U0094Vehicle Communication Bus H (+) OpenCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0094 concerns vehicle communication bus h (+) open. Learn what this fault indicates and where to begin diagnosis.U0095Vehicle Communication Bus H (+) LowCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0095 concerns vehicle communication bus h (+) low. Learn what this fault indicates and where to begin diagnosis.U0096Vehicle Communication Bus H (+) HighCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0096 concerns vehicle communication bus h (+) high. Learn what this fault indicates and where to begin diagnosis.U0097Vehicle Communication Bus H (-) OpenCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0097 concerns vehicle communication bus h (-) open. Learn what this fault indicates and where to begin diagnosis.U0098Vehicle Communication Bus H (-) LowCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0098 concerns vehicle communication bus h (-) low. Learn what this fault indicates and where to begin diagnosis.U0099Vehicle Communication Bus H (-) HighCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0099 concerns vehicle communication bus h (-) high. Learn what this fault indicates and where to begin diagnosis.