U0649

Lost Communication With Coolant Pump D

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Unstable operation of the cooling system
Check Engine light comes on
Reduced cooling efficiency

Causes

Open or short circuit in the pump circuit
Coolant pump malfunction
Wiring Harness Problems
ECU malfunction

How to Fix

Check the continuity of the coolant pump circuit
Check the condition of the wiring harness
Test the coolant pump
Check ECU software for updates

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