U0437

Invalid Data Received From Differential Control Module - Rear

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Disabling the all-wheel drive system
Incorrect operation of the rear differential
Loss of power during acceleration
Errors in the stabilization system

Causes

Damage to the wiring harness to the differential module
Malfunction of the rear differential control module
Problems with the CAN bus
Corrosion of contacts or connectors
Software error in the module

How to Fix

Check the integrity of wiring and connectors
Read error codes from differential module
Check voltage and resistance in power circuits
Flash or replace the differential module if necessary
Check the operation of the CAN bus

Related codes

U0436 U0438 U0401