U0204

Symptoms

• The power windows on door F do not work
• Door locks F do not function
• Check Engine Light Is On
• Errors in other CAN bus-related systems
• Door F is not shown on the on-board computer display

Causes

• Open or short circuit in the communication circuit
• Door control module fault F
• Corroded or oxidized connectors
• Module power problems
• Software glitches

How to Fix

1. Check door module fuse F
2. Inspect connectors and wiring harness for damage
3. Check the power supply and ground of the module
4. Scan the CAN bus for other errors
5. Replace door control module F if necessary

Related codes

Error U0204 by Vehicle Brand