P0B0A

Electric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Gear shifting problems
Transmission overheating
Reduced transmission efficiency
Pump noise

Causes

Damage to the pump wiring harness
Blown fuse
Faulty pump relay
Problems with the pump motor itself
Poor contact in connectors

How to Fix

Check pump circuit fuses
Inspect the wiring harness for damage
Check pump relay
Diagnose the pump motor
Check contacts in connectors

Related codes

P0B0B P0B0C P0B0D