OBD-II & Manufacturer-Specific Codes

Understand your
diagnostic trouble code

Search 15,000+ OBD-II codes with manufacturer and model-specific interpretations — from generic P-codes to proprietary factory faults.

Not sure of the code? Browse by manufacturer

Simple process

How it works

Get from a cryptic fault code to a clear explanation in seconds.

Step 1

Enter your code

Type in the DTC shown on your scanner — from generic OBD-II codes like P0300 to manufacturer-specific codes.

Step 2

Select your vehicle

Choose your make and model to get interpretations specific to your vehicle's systems and software.

Step 3

Get the diagnosis

See a plain-English explanation, likely causes, severity rating, and typical repair steps.

Quick access

Browse by manufacturer

View all manufacturers
Jaguar Land Rover Volvo BMW Mercedes-Benz Volkswagen Audi Ford Toyota Honda Nissan Hyundai
Total codes
15,000+
Manufacturers covered
60+
Severity ratings
3-tier
Cost to use
Free