OBD Guide

U0141

Lost Communication With Body Control Module A

Severity: MEDIUM

Symptoms

  • Power windows don't work
  • Central locking malfunction
  • Problems with interior lighting
  • Lack of response to commands from the key fob
  • Check Engine Light Is On

Causes

  • Open or short circuit in communication circuit
  • Body control module malfunction
  • Module power problems
  • Contact corrosion
  • Module software failure

How to Fix

  1. Check the integrity of the wiring harness
  2. Check module fuses and relays
  3. Diagnose the status of the body control module
  4. Clean or replace connectors if necessary
  5. Reflash or replace the module if it malfunctions

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