P2B6C

Coolant Pump D Overspeed/Air in System

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–389 (est.)

Symptoms

Engine overheating in certain operating modes
Noise or vibration from the cooling pump
Unstable engine temperature
Overheat warning on instrument panel
Reduced efficiency of the climate control system

Causes

Electrical cooling pump malfunction
Air locks in the cooling system
Problems with pump wiring or connectors
Pump control module malfunction
Mechanical resistance in the cooling system

How to Fix

Check coolant level and repair leaks
Bleed the cooling system to remove air
Check the pump electrical circuit (fuse, relay, wiring)
Test the resistance of the pump windings
Replace the faulty cooling pump if necessary

Related codes

P2B6D P2610 P0480