U0116

Lost Communication With Coolant Temperature Control Module

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Check Engine Light Is On
Incorrect operation of cooling fans
Engine overheating
Reduced cooling system efficiency
Increased fuel consumption

Causes

Open or short circuit in the module circuit
Malfunction of the coolant temperature control module
Problems with the wiring harness or connectors
Failures in ECU software
Module power problems

How to Fix

Check the integrity of the circuit and module connectors
Check the power supply and ground of the module
Scan the module for errors
If necessary, replace the temperature control module
Update ECU software if necessary

Related codes

U0115 U0117 U0118