Car diagnostic codes – what they mean and how to deal with them

Decoding OBD-II diagnostic trouble codes

Understanding fault codes is an important part of vehicle maintenance. Our full list will help you interpret the codes so you can troubleshoot your car yourself.
Search your trouble code
Search your trouble code
List of the most common DTC codes – find the meaning and learn how to solve the problem

Top 50 fault codes

View the full list of codes
During vehicle diagnostics, an OBD2 scanner displays all malfunctions as fault codes. On this page, you can find out what they mean and what the difference between them is. Our comprehensive list will help you interpret OBD2 codes, so you can easily find out more about the malfunction online free of charge and repair your car yourself.
The ECU fault code can tell you exactly what problem your vehicle has

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The ECU fault code can tell you exactly what problem your vehicle has

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Everything you need to know about DTC codes
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