What Does U0220 Mean?
Communication has been lost between the body control module and door switch F on the vehicle network. This typically affects a specific door's switch module, commonly a rear passenger side door.
Common Causes
35%
Damaged or broken wiring in door jamb from repeated opening/closing
30%
Faulty door switch module or circuit board
20%
Corroded or loose connector at door module
10%
Network bus wiring short or open circuit
5%
Body control module communication failure
Diagnostic Steps
1
Step 1: Visually inspect door jamb boot area for broken or damaged wiring where flexing occurs
2
Step 2: Test door switch F module connector for proper connection, corrosion, and moisture damage
3
Step 3: Use scan tool to attempt communication with door switch F module and monitor live data
4
Step 4: Verify power and ground circuits at door module connector with multimeter
5
Step 5: Test CAN bus signal integrity between door module and BCM using oscilloscope or resistance measurements
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
Communication has been lost between the body control module and door switch F on the vehicle network. This typically affects a specific door's switch module, commonly a rear passenger side door.
The most common cause of U0220 (Lost Communication With "Door Switch F") is: Damaged or broken wiring in door jamb from repeated opening/closing
Typical repair costs for U0220 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to operate. Door functions including lock/unlock, window control, and interior lighting for this door may be inoperative.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0220 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
