U019F

Lost Communication With Engine Coolant Pump Control Module

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Engine overheating
Unstable operation of the cooling system
Reduced engine performance
Errors in climate control operation

Causes

Open or short circuit in the module power supply circuit
Damage to the CAN bus wiring harness
Pump control module malfunction
Connector problems or contact corrosion
Failures in ECU software

How to Fix

Check the integrity of the module power supply circuit
Inspect the condition of the wiring harness and connectors
Diagnose the pump control module
Update ECU software if necessary
Replace the control module if a fault is detected

Related codes

U019E U0100 U0121