DTC codes / P24xx · Auxiliary emission controls / P245C
P245C indicates that the powertrain control module has detected a low-voltage condition on the electrical circuit that controls the EGR cooler bypass valve on bank 1. The computer expects to see a certain voltage range when commanding the valve, but the signal wire is reading below the acceptable threshold, which points to a short to ground, an open circuit, or a faulty valve.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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