DTC codes / P0Bxx · Hybrid propulsion / P0B07
P0B07 indicates that the transmission control module (TCM) has detected a low current condition on the W phase of the electric auxiliary transmission fluid pump motor circuit. This pump maintains fluid pressure for the transmission during engine stop-start events or when the engine is off, and low current on one phase means the motor is not drawing the expected amperage, which can prevent the pump from building pressure.
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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