DTC codes / P2Bxx · Hybrid propulsion / P2BDD
P2BDD means the engine control module has detected that the motor electronics coolant temperature sensor circuit for sensor C is reporting a temperature outside the expected range or behaving erratically over time. The computer compares the sensor signal against other temperature inputs and operating conditions, and it sets this code when the signal is not plausible or does not change as expected.
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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