automotive diagnostics
7 Engine Fault Codes Slashing Repairs Fast
In 1996, U.S. law mandated OBD-II, making the seven most common engine fault codes - P0300, P0301, P0302, P0420, P0171, P0135, and P0455 - a key tool for cutting repair time. By reading these codes early, technicians can pinpoint misfires, sensor failures, or exhaust leaks before they become costly