What Does U0205 Mean?
The central gateway or body control module has lost communication with Door Control Module G over the vehicle's communication network (CAN bus). This typically indicates a problem with the module itself, its power supply, ground connection, or the network wiring between modules.
Common Causes
35%
Faulty door control module G with internal failure or corrupted software
30%
Damaged or corroded wiring harness or connector to door control module G
20%
Poor power supply or ground connection to the door control module
10%
CAN bus network failure or short circuit on communication lines
5%
Faulty body control module or gateway module
Diagnostic Steps
1
Step 1: Verify which door control module G refers to in the vehicle's service documentation (often rear passenger door or specific position)
2
Step 2: Check all fuses related to door control module G and verify power and ground at the module connector using a multimeter
3
Step 3: Inspect the wiring harness and connectors for damage, corrosion, or loose connections at the door module and body control module
4
Step 4: Use a scan tool to check CAN bus network integrity and verify if other modules are communicating properly
5
Step 5: If wiring and power are good, test or replace the door control module G after verifying part number compatibility
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The central gateway or body control module has lost communication with Door Control Module G over the vehicle's communication network (CAN bus). This typically indicates a problem with the module itself, its power supply, ground connection, or the network wiring between modules.
The most common cause of U0205 (Lost Communication With "Door Control Module G") is: Faulty door control module G with internal failure or corrupted software
Typical repair costs for U0205 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not typically affect vehicle safety or drivability. Door-related convenience features such as power locks, windows, or mirrors on the affected door may not function properly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0205 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Network
System
Body Control/Convenience
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
