P2C37

Cold Start Engine Coolant Pump Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Engine overheating during cold start
Unstable engine operation
Extended warm-up time
Check Engine Light Illuminates
Reduced cooling system efficiency

Causes

Coolant pump malfunction
Cooling system is dirty or clogged
Problems with the pump electrical circuit
Coolant temperature sensor malfunction
Mechanical damage to the pump

How to Fix

Check the operation of the coolant pump
Clean or replace coolant
Check the electrical circuit of the pump
Replace the coolant temperature sensor if necessary
Replace the coolant pump if a fault is detected

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