P0B00

Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
The transmission goes into emergency mode
Unusual noises from the transmission area
Gear shifting problems
Reduced performance of the hybrid system

Causes

Open or short circuit in phase U circuit
Pump motor malfunction
Problems with the transmission control unit
Poor contact in wiring harness connectors
Failure of the pump itself

How to Fix

Check the continuity of phase U
Test the pump motor
Inspect connectors and wiring harness
Check the operation of the transmission control unit
If necessary, replace the transmission fluid pump

Related codes

P0B01 P0B02 P0B03