P0B39

Motor Electronics Coolant Pump B Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Reduced engine performance
Check Engine Light Is On
Noise from the cooling pump area

Causes

Cooling pump B fault
Open or short circuit in control circuit
Poor connection or corroded connectors
Faulty relay or fuse
Problems with the engine control unit

How to Fix

Check the pump fuse and relay
Inspect the wiring harness and connectors for damage.
Check resistance and voltage on the pump
Replace the faulty pump if necessary
Test the operation of the pump after repair

Related codes

P0B38 P0B37 P0B3A