OBD Guide

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

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

Related codes

Error U0437 by Vehicle Brand