P0B03

Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Unusual noises from the transmission area
Gear shifting problems
Reduced transmission efficiency
Transmission transition to emergency mode

Causes

Pump motor malfunction
Problems with the wiring harness or connectors
Control module malfunction
Short circuit or open circuit
Low transmission fluid level

How to Fix

Check the level and condition of the transmission fluid
Diagnose the pump motor
Check the integrity of the wiring harness and connectors
Test the control module
Replace faulty components

Related codes

P0B01 P0B02 P0B04