What Does U0511 Mean?
A receiving module has detected invalid data from Seat Control Module C, typically controlling rear left seat or additional front seat features. Communication integrity on the network bus is compromised.
Common Causes
35%
Seat control module C internal failure or processor malfunction
30%
Damaged or chafed wiring harness in seat control circuit
20%
Poor ground connection or power supply fault to seat module C
10%
Water damage to control module from vehicle leaks or spills
5%
CAN bus network fault or communication line damage
Diagnostic Steps
1
Step 1: Monitor Seat Control Module C data parameters to identify which specific data is invalid or out of range
2
Step 2: Test voltage supply and ground at seat control module C connector location
3
Step 3: Inspect seat wiring harness for physical damage, especially at points where wiring flexes with seat movement
4
Step 4: Check for water intrusion in module location and verify connector terminals are clean and dry
5
Step 5: Measure CAN bus signal quality and replace seat control module C if all circuits check out
Estimated Repair Cost
$100 - $900
Parts + labor, varies by vehicle and location
A receiving module has detected invalid data from Seat Control Module C, typically controlling rear left seat or additional front seat features. Communication integrity on the network bus is compromised.
The most common cause of U0511 (Invalid Data Received From "Seat Control Module C") is: Seat control module C internal failure or processor malfunction
Typical repair costs for U0511 range from $100 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally not a safety concern. Rear or additional seat adjustments may be inoperative. Seat heating, cooling, or memory features 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 U0511 to identify the root cause.
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Quick Info
Category
Network
System
Body Control / Seat Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
