What Does U0525 Mean?
The control system is receiving invalid data from Door Window Motor C (typically left rear window motor module). This network communication error affects rear power window system operation and monitoring.
Common Causes
35%
Defective window motor module C or integrated motor electronics
30%
Corroded or damaged connector at rear window motor C
20%
Rear door harness wiring damage or network communication fault
10%
Water intrusion into rear door cavity causing electrical issues
5%
Body control module or door module communication failure
Diagnostic Steps
1
Step 1: Confirm Window Motor C location (typically left rear door) and test window functionality manually
2
Step 2: Remove rear door panel and inspect motor connector for corrosion, damage, or water presence
3
Step 3: Monitor scan tool data for Window Motor C while operating window to identify data transmission errors
4
Step 4: Check continuity and resistance on communication bus circuits between motor and control module
5
Step 5: Replace window motor module if power and ground are verified but invalid data persists
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
The control system is receiving invalid data from Door Window Motor C (typically left rear window motor module). This network communication error affects rear power window system operation and monitoring.
The most common cause of U0525 (Invalid Data Received From "Door Window Motor C") is: Defective window motor module C or integrated motor electronics
Typical repair costs for U0525 range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Minimal safety impact. Rear window operation may be important for child passenger comfort and emergency ventilation access.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0525 to identify the root cause.
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Quick Info
Category
Network
System
Body Control / Power Windows
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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