What Does U0224 Mean?
Network communication has been lost between the body control module and door window motor C. This communication failure prevents normal window operation and status feedback from this motor module.
Common Causes
35%
Wire damage in door jamb from door flexing and movement
25%
Failed window motor C control module electronics
20%
Corroded or disconnected connector at motor module
15%
Power supply or ground circuit open or high resistance
5%
CAN bus wiring fault or network disruption
Diagnostic Steps
1
Step 1: Perform visual inspection of door jamb wiring for breaks, abrasion, or damage from door operation
2
Step 2: Check window motor C module connector for proper seating, corrosion, water damage, and terminal integrity
3
Step 3: Use scan tool to attempt communication with window motor C module and check module identification
4
Step 4: Test electrical circuits at motor module: verify battery voltage on power pin and less than 0.2 ohms resistance to ground
5
Step 5: Check CAN bus communication signals with voltmeter or scope; CAN High should be approximately 2.5-3.5V, CAN Low 1.5-2.5V
Estimated Repair Cost
$200 - $700
Parts + labor, varies by vehicle and location
Network communication has been lost between the body control module and door window motor C. This communication failure prevents normal window operation and status feedback from this motor module.
The most common cause of U0224 (Lost Communication With "Door Window Motor C") is: Wire damage in door jamb from door flexing and movement
Typical repair costs for U0224 range from $200 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle remains safe to operate. Loss of window function may present security or weather sealing concerns if window cannot be raised.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0224 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network / Power Window System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
