U0203

Symptoms

• Power windows on door E do not work
• Door E locks do not function
• Error on the dashboard
• Sometimes problems with mirrors (if they are controlled by this module)
• Intermittent operation of door functions

Causes

• Open or short circuit in the module circuit
• Door control module E fault
• Connector problems or contact corrosion
• Module software failures
• Problems with the car's CAN bus

How to Fix

1. Check fuses associated with the module
2. Inspect connectors and wiring harness for damage
3. Diagnose the door control module
4. If necessary, replace the control module
5. Update module software (if available)

Related codes

Error U0203 by Vehicle Brand