What Does U0514 Mean?
The body control module or other control unit is receiving corrupted or implausible data from the mirror control module via the vehicle's communication network. This indicates a network communication issue rather than a mechanical mirror problem.
Common Causes
35%
Faulty mirror control module sending corrupted data packets
30%
Damaged or corroded wiring harness connections to mirror module
20%
CAN bus network issues affecting communication integrity
10%
Software corruption or calibration error in mirror module
5%
Body control module software issue misinterpreting valid data
Diagnostic Steps
1
Step 1: Use scan tool to monitor live data from mirror control module and verify what data parameters are being transmitted
2
Step 2: Inspect mirror control module connector and door harness for corrosion, water intrusion, or physical damage
3
Step 3: Check CAN bus communication with advanced scan tool, verify network voltage levels (2.5V nominal on CAN-H and CAN-L)
4
Step 4: Test mirror control module by substitution if available, or check for available software updates
5
Step 5: Verify ground connections at door module and mirror control module for high resistance
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
The body control module or other control unit is receiving corrupted or implausible data from the mirror control module via the vehicle's communication network. This indicates a network communication issue rather than a mechanical mirror problem.
The most common cause of U0514 (Invalid Data Received From Mirror Control Module) is: Faulty mirror control module sending corrupted data packets
Typical repair costs for U0514 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Mirror functionality may be impaired affecting visibility during lane changes and reversing. Does not affect vehicle operation but compromises safety awareness.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0514 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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