U0106

Lost Communication With Glow Plug Control Module 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

Difficulty starting the engine (especially in cold weather)
Check Engine Light Is On
Reduced engine power
Increased fuel consumption
Possible misfires

Causes

Open or short circuit in the communication circuit
Malfunction of the glow plug control module
Poor contact in connectors
Module power problems
ECU software error

How to Fix

Check the integrity of the wiring harness and connectors
Check the power and ground of the control module
Scan the system for other errors
Replace the control module if necessary
Update ECU firmware (if required)

Related codes

U0100 U0101 U0121