DTC codes / P2Bxx · Hybrid propulsion / P2BC2
P2BC2 indicates that the powertrain control module has detected an abnormal voltage condition on the supply circuit for the electric coolant pump that serves the charge air cooler, which is the heat exchanger that cools compressed intake air before it enters the engine. The computer monitors the voltage on the pump's power feed and sets this code when the signal falls outside the expected range, typically indicating an open circuit, a short to ground, or a short to voltage.
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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