What Does U0517 Mean?
Invalid or corrupted data is being received from door switch module 'B', typically the front passenger door. The door control module is sending data packets that don't conform to expected network protocol or contain implausible values.
Common Causes
35%
Faulty passenger door control module with internal component failure
30%
Damaged or corroded wiring in passenger door harness at hinge flex point
20%
Water damage to door module from window leak or door seal failure
10%
Defective door ajar switch or lock actuator sending corrupt signals
5%
Poor ground connection or network communication fault specific to passenger door
Diagnostic Steps
1
Step 1: Monitor passenger door module data stream and test all door functions (lock, unlock, window, ajar switch) to identify faulty input
2
Step 2: Inspect passenger door wiring harness at hinge for broken conductors, especially on vehicles with heavy door usage
3
Step 3: Remove passenger door panel and check module connector for water intrusion, green corrosion, or damaged pins
4
Step 4: Measure voltage and resistance at door module connector using wiring diagram for power, ground, and CAN bus circuits
5
Step 5: Swap passenger door module with known-good unit if available, or test module operation using bi-directional controls
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
Invalid or corrupted data is being received from door switch module 'B', typically the front passenger door. The door control module is sending data packets that don't conform to expected network protocol or contain implausible values.
The most common cause of U0517 (Invalid Data Received From "Door Switch B") is: Faulty passenger door control module with internal component failure
Typical repair costs for U0517 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Passenger door functions may be compromised including locks, windows, and ajar warnings. Does not affect vehicle drivability but may impact passenger safety and security features.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0517 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network
Difficulty
Type
Generic (SAE)
Recommended Tools
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