P2D0B

Motor Electronics Coolant Pump C Overspeed/Air in System

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Unstable engine operation
Overheat warning on dashboard
Reduced engine power
Coolant pump noise

Causes

Electric coolant pump malfunction
Air lock in the cooling system
Problems with the pump electrical circuit
Coolant temperature sensor malfunction
Engine control unit software error

How to Fix

Check coolant level
Remove air from the cooling system
Check the electrical circuit of the pump
Replace the electric coolant pump if necessary
Update engine control unit software

Related codes

P2D0A P2D0C P2181