U0439

Invalid Data Received From 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
Off-road modes do not work
Problems with the all-wheel drive system
Reduced functionality of driving assistance systems
Errors in other related systems

Causes

Problems with wiring to the control module
All Terrain Control module malfunction
Bad contacts in connectors
Module software errors
Module power problems

How to Fix

Check the integrity of wiring and connectors
Check power supply and grounding of the module
Read error codes in other systems
Flash or replace the control module
Carry out CAN bus diagnostics

Related codes

U0401 U0415 U0422