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 7561–7584 of 8256

Most searched first

U04A7Invalid Data Received From Hybrid/EV Battery Interface Control Module GCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04A7 concerns invalid data received from hybrid/ev battery interface control module g. Learn what this fault indicates and where to begin diagnosis.U04A8Invalid Data Received From Hybrid/EV Battery Interface Control Module HCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04A8 concerns invalid data received from hybrid/ev battery interface control module h. Learn what this fault indicates and where to begin diagnosis.U04A9Invalid Data Received From Hybrid/EV Battery Interface Control Module ICheck soonNetwork & Communication45–120 minutes for initial diagnosisU04A9 concerns invalid data received from hybrid/ev battery interface control module i. Learn what this fault indicates and where to begin diagnosis.U04AAInvalid Data Received From Hybrid/EV Battery Interface Control Module JCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04AA concerns invalid data received from hybrid/ev battery interface control module j. Learn what this fault indicates and where to begin diagnosis.U04ABInvalid Data Received From Hybrid/EV Battery Interface Control Module KCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04AB concerns invalid data received from hybrid/ev battery interface control module k. Learn what this fault indicates and where to begin diagnosis.U04ACInvalid Data Received From Hybrid/EV Battery Interface Control Module LCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04AC concerns invalid data received from hybrid/ev battery interface control module l. Learn what this fault indicates and where to begin diagnosis.U04ADInvalid Data Received From Hybrid/EV Battery Interface Control Module MCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04AD concerns invalid data received from hybrid/ev battery interface control module m. Learn what this fault indicates and where to begin diagnosis.U04AEInvalid Data Received From Hybrid/EV Battery Interface Control Module NCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04AE concerns invalid data received from hybrid/ev battery interface control module n. Learn what this fault indicates and where to begin diagnosis.U04AFInvalid Data Received From Hybrid/EV Battery Interface Control Module OCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04AF concerns invalid data received from hybrid/ev battery interface control module o. Learn what this fault indicates and where to begin diagnosis.U04B0Invalid Data Received From Hybrid/EV Battery Interface Control Module PCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B0 concerns invalid data received from hybrid/ev battery interface control module p. Learn what this fault indicates and where to begin diagnosis.U04B1Invalid Data Received From Battery Monitor ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B1 concerns invalid data received from battery monitor module. Learn what this fault indicates and where to begin diagnosis.U04B2Invalid Data Received From Particulate Matter Sensor BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B2 concerns invalid data received from particulate matter sensor b. Learn what this fault indicates and where to begin diagnosis.U04B3Invalid Data Received From Planetary Gear Set Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B3 concerns invalid data received from planetary gear set control module. Learn what this fault indicates and where to begin diagnosis.U04B4Invalid Data Received From Brake Blending ActuatorCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B4 concerns invalid data received from brake blending actuator. Learn what this fault indicates and where to begin diagnosis.U04B5Invalid Data Received from Brake System Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B5 concerns invalid data received from brake system control module b. Learn what this fault indicates and where to begin diagnosis.U04B6Invalid Data Received From Catalyst Heater Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04B6 concerns invalid data received from catalyst heater control module. Learn what this fault indicates and where to begin diagnosis.U04BAInvalid Data Received from Switch Input Module “A”Check soonNetwork & Communication45–120 minutes for initial diagnosisU04BA concerns invalid data received from switch input module “a”. Learn what this fault indicates and where to begin diagnosis.U04BBInvalid Data Received from Switch Input Module “B”Check soonNetwork & Communication45–120 minutes for initial diagnosisU04BB concerns invalid data received from switch input module “b”. Learn what this fault indicates and where to begin diagnosis.U04BCInvalid Data Received from Switch Input Module “C”Check soonNetwork & Communication45–120 minutes for initial diagnosisU04BC concerns invalid data received from switch input module “c”. Learn what this fault indicates and where to begin diagnosis.U04BDInvalid Data Received From Park Lock/Pawl Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04BD concerns invalid data received from park lock/pawl control module. Learn what this fault indicates and where to begin diagnosis.U04BEInvalid Data Received From Battery Charger Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04BE concerns invalid data received from battery charger control module b. Learn what this fault indicates and where to begin diagnosis.U04BFInvalid Data Received from Drive Motor A Clutch ActuatorCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04BF concerns invalid data received from drive motor a clutch actuator. Learn what this fault indicates and where to begin diagnosis.U04C0Invalid Data Received from Battery Management Control ModuleCheck soonNetwork & Communication45–120 minutes for initial diagnosisU04C0 concerns invalid data received from battery management control module. Learn what this fault indicates and where to begin diagnosis.U0501Invalid Data Received From Door Control Module BCheck soonNetwork & Communication45–120 minutes for initial diagnosisU0501 concerns invalid data received from door control module b. Learn what this fault indicates and where to begin diagnosis.