What Does U0519 Mean?
Door switch module 'D', typically the right rear door, is transmitting corrupted or invalid data over the vehicle communication network. The data packets do not meet network protocol standards or contain implausible sensor values.
Common Causes
35%
Defective right rear door control module with electronic failure
30%
Damaged wiring harness or corroded connections at door hinge flex area
20%
Water damage to door electronics from window regulator leak or door seal
10%
Faulty door ajar sensor or lock actuator creating signal noise
5%
Poor ground or network communication fault at rear door circuit
Diagnostic Steps
1
Step 1: Use scan tool to monitor right rear door module data and cycle all door functions to identify source of invalid data
2
Step 2: Inspect door wiring harness at hinge area for physical damage, especially after collision repair or on high-mileage vehicles
3
Step 3: Remove right rear door panel and check module and connector for water infiltration or corrosion damage
4
Step 4: Test door module ground circuit for high resistance and verify power supply circuits are within specification
5
Step 5: Perform module communication test and attempt reprogramming before replacing module
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
Door switch module 'D', typically the right rear door, is transmitting corrupted or invalid data over the vehicle communication network. The data packets do not meet network protocol standards or contain implausible sensor values.
The most common cause of U0519 (Invalid Data Received From "Door Switch D") is: Defective right rear door control module with electronic failure
Typical repair costs for U0519 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Right rear door functions may be inoperative including locks, windows, and ajar detection. Does not affect vehicle operation but may impact passenger convenience and security.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0519 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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