Skip to content
Book on WhatsApp

U054B

Invalid Data Received From Interior Lighting Control Module A

A receiving module detected implausible data from interior lighting control module A. Ambient lighting zone, reading lamp or door courtesy light commands fail plausibility checks and are rejected.

  • Check engine light: Not always
  • Emissions related: No
  • Repair difficulty: easy

Symptoms

  • Multiple warning lights may illuminate
  • Affected modules may go into limp mode or shut down
  • Specific functions inoperative depending on module
  • Diagnostic tools may show communication faults

Common causes

Ordered by how often each turns out to be the cause.

  • Module internal fault or sensor input driftCommon
  • Software version mismatch after replacementPossible
  • Gateway module routing CAN messages incorrectlyLess likely

Parts involved

  • Interior Lighting Module A

U054B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.