P26D3

Engine Coolant Pump Supply Voltage Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Engine overheating
Unstable operation of the cooling system
Check Engine Light Is On
Reduced engine performance
Coolant pump noise

Causes

Open or short circuit in the pump power supply circuit
Coolant pump relay malfunction
Blown fuse
Problems with the engine ECU
Malfunction of the coolant pump itself

How to Fix

Check fuses and replace if necessary
Check coolant pump relay
Diagnose wiring integrity
Check the functionality of the coolant pump
If necessary, replace the coolant pump

Related codes

P26D0 P26D1 P26D2