P0B08

Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Transmission warning light on dashboard
Reduced transmission efficiency
Noise or vibration from the transmission fluid pump
Transmission overheating
Transmission transition to emergency mode

Causes

Mechanical jamming of the transmission fluid pump
Problems in the electrical circuit of the pump motor (short circuit, open circuit)
Pump motor malfunction
Transmission control module (TCM) problems
Contaminated or low transmission fluid level

How to Fix

Check the level and condition of the transmission fluid
Diagnose the electrical circuit of the pump motor for breaks or short circuits
Check the resistance of the pump motor windings
If necessary, replace the transmission fluid pump motor
Reflash or replace the transmission control unit if necessary

Related codes

P0B09 P0B07 P0B0A