P0B0B

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

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–133 (est.)

Symptoms

Check Engine Light Is On
Gear shifting problems
Unusual noises from the transmission area
Reduced transmission efficiency
Transmission fluid overheating

Causes

Pump relay or fuse problems
Pump motor malfunction
Short circuit in power supply
Damage to wiring or connectors
Transmission control unit malfunction

How to Fix

Check fuses and pump relays
Diagnose the pump motor
Check the integrity of the wiring and connectors
Measure the voltage at the pump terminals
Scan the transmission control module for other faults

Related codes

P0B0A P0B0C P0B0D