U0648

Lost Communication With Motor Electronics Coolant Pump C

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Unstable operation of the cooling system
Increased engine temperature
Problems with interior heating
Reduced engine power

Causes

Broken or damaged wiring to the pump
Electronic coolant pump malfunction
Problems with connectors or contacts
Failures in ECU software
Pump power problems

How to Fix

Check the integrity of wiring and connectors
Diagnose the operation of the coolant pump
Check fuses and relays associated with the pump
Update or reflash the ECU software
If necessary, replace the electronic coolant pump

Related codes

U0647 U0649 U0650