U0138

Lost Communication With All Terrain Control Module

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Disabling off-road control systems
No response to the driving mode switch
Occurrence of other related CAN bus errors
Reduced functionality in off-road conditions

Causes

Open or short circuit in the module power supply circuit
Damage to the wiring harness to the module
Malfunction of the off-road control module itself
Problems with the CAN bus
Blown module fuse

How to Fix

Check fuses associated with the module
Inspect the wiring harness for damage
Check the power supply and ground of the module
Scan the CAN bus for other errors
If necessary, replace the off-road control module

Related codes

U0100 U0121 U0140