U0118

Lost Communication With Fuel Additive Control Module

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Possible reduction in engine power
Increased fuel consumption
Problems with emission control systems
Error message on the dashboard

Causes

Open or short circuit in the module circuit
Malfunction of the fuel additive control module
Problems with connectors or wiring harness
Software failures in the ECU
Module power problems

How to Fix

Check the integrity of the module electrical circuit
Inspect connectors and wiring harness for damage
Check power supply and grounding of the module
Scan the module for additional errors
If necessary, replace the control module

Related codes

U0115 U0119 U0121