What Does U0211 Mean?
Communication has been lost with Seat Control Module D, typically controlling the remaining rear seat position. The module is not communicating on the vehicle's data network with other control modules.
Common Causes
35%
Defective seat control module D requiring replacement
30%
Wiring harness damage in rear seating area or trunk transition
20%
Corroded or disconnected connector at seat control module D
10%
Power or ground circuit failure to module D
5%
CAN bus network issue in rear circuit branch
Diagnostic Steps
1
Step 1: Access seat control module D location (typically under or behind second row seat on opposite side from module C)
2
Step 2: Inspect wiring harness for physical damage, especially where wires route through seat mechanisms or fold points
3
Step 3: Test connector for proper engagement and check terminals for corrosion or moisture intrusion
4
Step 4: Verify battery voltage on power supply circuit and good ground connection with key on
5
Step 5: If electrical circuits are good, verify CAN bus signals and replace seat control module D
Estimated Repair Cost
$150 - $1,000
Parts + labor, varies by vehicle and location
Communication has been lost with Seat Control Module D, typically controlling the remaining rear seat position. The module is not communicating on the vehicle's data network with other control modules.
The most common cause of U0211 (Lost Communication With "Seat Control Module D") is: Defective seat control module D requiring replacement
Typical repair costs for U0211 range from $150 to $1,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not affect vehicle safety or driving capability. Power seat functions, comfort features, and memory settings for the affected rear seat will be inoperative.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0211 to identify the root cause.
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Quick Info
Category
Network
System
Body Control/Seat Control
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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