OBD Guide

U0503

Invalid Data Received From Door Control Module D

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Power windows don't work
  • Central locking does not function
  • The malfunction indicator on the instrument panel is on
  • Problems with mirrors (if controlled via the door module)
  • Errors in other systems related to the door module

Causes

  • Door control module malfunction
  • Open or short circuit in the communication circuit
  • Poor contact in connectors
  • Module power problems
  • Software error in the module

How to Fix

  1. Check the power and ground of the door module
  2. Inspect connectors and wiring harness for damage
  3. Scan the door module for additional errors
  4. Check the functionality of the door module
  5. Update or reflash module software

Related codes

Error U0503 by Vehicle Brand