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ReadOBD helps you understand what your check engine code usually means for your specific vehicle. Enter your make, model, year, and OBD-II code(s), and we give you plain-English guidance: what might be wrong, how serious it is, what to check first, and what repair costs to expect.

We focus on clarity and cost awareness so you can talk to a mechanic with confidence and avoid unnecessary repairs.

Our reports are generated using current best practices and common causes for your vehicle type — but they are informational only. We never claim to give an exact diagnosis or tell you how to perform repairs. When in doubt, always have a qualified mechanic inspect your vehicle.