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 7153–7176 of 8256

Most searched first

U0204Lost Communication With Door Control Module FCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0204 concerns lost communication with door control module f. Learn what this fault indicates and where to begin diagnosis.U0205Lost Communication With Door Control Module GCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0205 concerns lost communication with door control module g. Learn what this fault indicates and where to begin diagnosis.U0206Lost Communication With Folding Top Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0206 concerns lost communication with folding top control module. Learn what this fault indicates and where to begin diagnosis.U0207Lost Communication With Moveable Roof Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0207 concerns lost communication with moveable roof control module a. Learn what this fault indicates and where to begin diagnosis.U0208Lost Communication With Seat Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0208 concerns lost communication with seat control module a. Learn what this fault indicates and where to begin diagnosis.U0209Lost Communication With Seat Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0209 concerns lost communication with seat control module b. Learn what this fault indicates and where to begin diagnosis.U020ALost Communication With Moveable Roof Control Module “B”Check soonNetwork & Communication45–120 minutes for initial diagnosisU020A concerns lost communication with moveable roof control module “b”. Learn what this fault indicates and where to begin diagnosis.U020BLost Communication With Door Control Module HCheck soonNetwork & Communication45–120 minutes for initial diagnosisU020B concerns lost communication with door control module h. Learn what this fault indicates and where to begin diagnosis.U020CLost Communication With Wireless Accessory Charging Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU020C concerns lost communication with wireless accessory charging module a. Learn what this fault indicates and where to begin diagnosis.U020DLost Communication With Wireless Accessory Charging Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU020D concerns lost communication with wireless accessory charging module b. Learn what this fault indicates and where to begin diagnosis.U0210Lost Communication With Seat Control Module CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0210 concerns lost communication with seat control module c. Learn what this fault indicates and where to begin diagnosis.U0211Lost Communication With Seat Control Module DCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0211 concerns lost communication with seat control module d. Learn what this fault indicates and where to begin diagnosis.U0212Lost Communication With Steering Column Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0212 concerns lost communication with steering column control module. Learn what this fault indicates and where to begin diagnosis.U0213Lost Communication With Mirror Control Module ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0213 concerns lost communication with mirror control module a. Learn what this fault indicates and where to begin diagnosis.U0214Lost Communication With Remote Function Actuation ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0214 concerns lost communication with remote function actuation module. Learn what this fault indicates and where to begin diagnosis.U0215Lost Communication With Door Switch ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0215 concerns lost communication with door switch a. Learn what this fault indicates and where to begin diagnosis.U0216Lost Communication With Door Switch BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0216 concerns lost communication with door switch b. Learn what this fault indicates and where to begin diagnosis.U0217Lost Communication With Door Switch CCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0217 concerns lost communication with door switch c. Learn what this fault indicates and where to begin diagnosis.U0218Lost Communication With Door Switch DCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0218 concerns lost communication with door switch d. Learn what this fault indicates and where to begin diagnosis.U0219Lost Communication With Door Switch ECheck soonNetwork & Communication45–120 minutes for initial diagnosisU0219 concerns lost communication with door switch e. Learn what this fault indicates and where to begin diagnosis.U0220Lost Communication With Door Switch FCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0220 concerns lost communication with door switch f. Learn what this fault indicates and where to begin diagnosis.U0221Lost Communication With Door Switch GCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0221 concerns lost communication with door switch g. Learn what this fault indicates and where to begin diagnosis.U0222Lost Communication With Door Window Motor ACheck soonNetwork & Communication45–120 minutes for initial diagnosisU0222 concerns lost communication with door window motor a. Learn what this fault indicates and where to begin diagnosis.U0223Lost Communication With Door Window Motor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0223 concerns lost communication with door window motor b. Learn what this fault indicates and where to begin diagnosis.