Get the app
Quick access from your home screen.
DTC codes / P0Bxx · Hybrid propulsion / P0B01
P0B01 indicates that the electric or auxiliary transmission fluid pump motor controller has detected an abnormally low current draw on phase U of the three-phase pump motor circuit. The computer compares commanded pump operation against measured current and flags this code when phase U current falls below the expected threshold, pointing to an open circuit, high resistance, or a failing pump motor.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.