OBD Codes List

Diagnostic reference · U0141

U0141

Lost Communication With Body Control Module A

System
Network communication (U code)
Lamp
Check Engine Light
Category
Network Communications

What it means

U0141 means Lost Communication With Body Control Module A.

Where it lives

For U0141, the description names the module as the part involved.

Check these first

  • A wiring or connector fault between Body Control Module A and other modules
  • Corrosion or water at Body Control Module A or its connections
  • A software or programming fault inside Body Control Module A
  • Physical damage to Body Control Module A
  • Aftermarket accessories tied into the body wiring

What to do next

  1. Scan all modules for communication codes
  2. Inspect the Body Control Module A wiring and connectors
  3. Check for water damage or corrosion at the module
  4. Look for aftermarket accessories tapped into the body wiring
  5. Replace Body Control Module A if the fault returns
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.