P261E

Coolant Pump B Control Circuit Stuck On

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–94 (est.)

Symptoms

Constant operation of the cooling fan
Engine overheating or temperature fluctuations
Reduced cooling system efficiency
"Check Engine" signal on the dashboard
Unstable engine operation at idle

Causes

Electrical coolant pump malfunction
Problems in the wiring harness or pump connectors
Short circuit in control circuit
Faulty relay or control unit
Mechanical jamming of the pump

How to Fix

Check operation of coolant pump B
Inspect the wiring harness and connectors for damage.
Check pump control circuit for short circuit
Test the relay and control unit
If necessary, replace the coolant pump

Related codes

P261B P261C P261D