What Does U0254 Mean?
Communication has been lost with the remote start module. This module enables remote vehicle starting via key fob or smartphone app.
Common Causes
35%
Failed remote start control module
30%
Damaged or disconnected wiring/connectors to remote start module
15%
Poor ground connection at remote start module
12%
Blown fuse or loss of power to remote start module
8%
Network communication fault or CAN bus issue
Diagnostic Steps
1
Step 1: Locate remote start module (often under dash or near steering column) and check fuses
2
Step 2: Verify power and ground at module connector using multimeter
3
Step 3: Inspect module connector and wiring for damage, loose connections, or corrosion
4
Step 4: Use scan tool to monitor network communication and attempt to ping remote start module
5
Step 5: If all connections test good, replace remote start control module
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
Communication has been lost with the remote start module. This module enables remote vehicle starting via key fob or smartphone app.
The most common cause of U0254 (Lost Communication With Remote Start Module) is: Failed remote start control module
Typical repair costs for U0254 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No safety impact. Remote start feature will be inoperative but vehicle can still be started normally with key.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0254 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Network Communication / Remote Start System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
