P26CA

Engine Coolant Pump Control Circuit/Open

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Unstable operation of the cooling system
Check Engine Light Is On
Reduced interior heating efficiency
Coolant pump noise

Causes

Broken wiring in the pump control circuit
Coolant pump relay malfunction
Damage to the electric pump
Connector problems or contact corrosion
Engine control unit malfunction

How to Fix

Check the integrity of the wiring and connectors in the control circuit
Test the coolant pump relay
Check the resistance of the pump winding
Diagnose the engine control unit for errors
If necessary, replace the coolant pump

Related codes

P26CB P26C9 P26C8