OBD-II Diagnostics & Code Lookup
Every check-engine light leads back to an OBD-II code — and every code leads to a question: what does this mean on this vehicle? Performance Auto AI answers it with vehicle-specific code lookup, a public OBD-II code library, and AI tools that turn codes into prioritized test plans.
Code lookup with vehicle context
A code alone is a definition; a code plus the vehicle is a diagnosis starting point. The lookup takes year, make, and model alongside the code and returns what the code means, the common symptoms, likely causes ranked for that platform, and fixes other technicians have verified.
The public OBD-II code library
The most-searched codes — P0300, P0420, P0171, and more — each have a full reference page: symptoms, causes, what a technician inspects, common mistakes, and the related codes that often appear alongside. It's free, public, and written to the same verification-first standard as the tools.
From code to closed ticket
The lookup is wired into the diagnostic suite: research the code, confirm with tests, then flow the finding straight into an AI-drafted estimate. The five-dollar scan becomes a paying job instead of free advice.
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Frequently Asked Questions
Where's the OBD-II code library?
At /obd2-codes — a public reference for the most-searched trouble codes, free to browse with no login.
Can I look up a code without a scan tool?
If you know the code (from a parts-store read or your own tool), the lookup and library work directly from the code.
Does the lookup work for any vehicle?
Yes — enter year, make, and model with the code to get causes ranked for that specific platform rather than generic definitions.
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