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

Check the power and ground of the door module
Inspect connectors and wiring harness for damage
Scan the door module for additional errors
Check the functionality of the door module
Update or reflash module software

Related codes

U0501 U0502 U0504