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Codes should be used in conjunction with the vehicle's service manual to discover which systems, circuits or components should be tested to fully diagnose the fault with a car code reader or professional OBD2 software.
List of Common OBD2 Codes. There are thousands of OBD2 codes. Here are some of the most common: Note: The definition of the codes below may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.
Explore our complete 2024 guide to OBD-II trouble codes, including P, B, C, and U codes. Diagnose your vehicle's issues effectively's expert insights.
The engine codes complete list is an invaluable source for diagnostic trouble codes (DTCs) related to a car’s OBD-II systems. It includes codes for the powertrain system, network and integration (U), body and chassis systems, as well as more.
A full guide of what OBD2 codes are, how to read diagnostic trouble codes (DTC’s), and a full list of DTC codes you can search from.
Below, you will find a full OBD2 code list with all the P-codes, which means that all these codes appear when there is trouble with the engine or drivetrain. Some of the codes down below have links, which means that we have a more in-depth article written about them to repair your car easily.
This list contains standard diagnostic trouble codes (DTC's) that are used by all manufacturers to identify vehicle problems. The codes provide below are generic codes that may not apply to all vehicles.