P2BA0

Coolant Pump C Underspeed

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Unstable engine operation
Hot air from the heating system
Temperature warning on dashboard
Increased fuel consumption

Causes

Coolant pump malfunction
Pump wiring problems
Pump relay fault
Problems with the engine control unit (ECU)
Low coolant level

How to Fix

Check the level and condition of the coolant
Diagnose the coolant pump
Check the electrical wiring and connections of the pump
Check pump relays and fuses
If necessary, replace the coolant pump

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