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DTC codes / P0Axx · Hybrid propulsion / P0AD1
P0AD1 indicates that the powertrain control module has detected the hybrid or electric vehicle battery pack cooling fan number 3 is running when it should be off, based on fan speed feedback or command status. The computer commands the fan to stop, but the fan continues to operate or the feedback circuit indicates it is still on, which can lead to unnecessary battery cooling and energy drain.
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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