OBD2 Codes | Repair Guide

OBD2 Codes | Repair Guide is a fast, offline reference for OBD2 codes, OBD-II diagnostic trouble codes (DTCs), check engine light codes, and common car fault codes. Got a code such as P0420, P0300, P0171, or another DTC? Search by exact code or keyword to quickly understand what the code means and where to start your diagnosis. WHAT YOU CAN DO • Search OBD2 / OBD-II codes by code or description • Look up generic and manufacturer-specific DTC codes • Browse P, B, C, and U code families • Explore codes by category and vehicle manufacturer • Read clear definitions, reference context, possible causes, and suggested checks • Save important codes to Favorites • Organize saved codes into collections • Review recently viewed codes in History • Use the local code database offline • Switch between English and Arabic • Choose light or dark theme and adjust reading preferences • Share useful code information • Remove ads with a lifetime purchase option USEFUL FOR CHECK ENGINE AND FAULT-CODE LOOKUP Use the app as a quick reference for engine fault codes, transmission codes, oxygen sensor and emissions faults, electrical issues, body codes, chassis codes, and vehicle network communication codes. If a scan tool or mechanic gives you an OBD2 code, this app helps you understand the DTC without searching through scattered web pages. It is useful for drivers, car owners, automotive students, technicians, mechanics, and DIY enthusiasts who need a practical fault-code reference. WORKS OFFLINE The DTC database is stored locally on your device, so code lookup remains available without an internet connection. No account is required for normal use. IMPORTANT OBD2 Codes | Repair Guide is a diagnostic code reference. It does not connect to your vehicle, read live data, clear fault codes, or replace an OBD2 scanner or professional diagnostic equipment. Code definitions and suggested checks are reference information and may vary by vehicle make, model, year, and system. Use proper diagnostic tools and consult a qualified technician when necessary. Keep OBD2, OBD-II, DTC, check engine, and car fault code information ready whenever you need it.