P2B87

Coolant Pump A Underspeed

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Unstable engine operation
Turning the cooling fan on at high speed
Reduced engine power
Hot air from the interior heating system

Causes

Electrical coolant pump malfunction
Problems with pump wiring or connectors
Low coolant level
Cooling system is dirty or clogged
Engine control unit malfunction

How to Fix

Check the level and condition of the coolant
Inspect the wiring and connectors of the coolant pump
Check the operation of the coolant pump
If necessary, replace the coolant pump
Check and, if necessary, update the ECU software

Related codes

P2B88 P2B89 P2610