OBD Guide

U043A

Invalid Data Received From Suspension Control Module B

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine Light Is On
  • Suspension error messages may appear on the display
  • Deterioration of adaptive suspension performance
  • The car may go into emergency suspension mode
  • Unstable operation of the stabilization system

Causes

  • Suspension Module B Power Problems
  • Open or short circuit in the CAN bus circuit
  • Corroded or damaged connectors
  • Suspension module B itself is faulty
  • Problems with the module software

How to Fix

  1. Check the integrity of the wiring harness to suspension module B
  2. Inspect and clean the connector contacts
  3. Check the power supply and ground of the module
  4. Read additional error codes for accurate diagnosis
  5. If necessary, replace or reflash suspension module B

Related codes

Error U043A by Vehicle Brand