OBD-II code · Network
U0254 Lost Communication With Remote Start Module
The vehicle bus reports loss of communication with the remote-start module. Engine pre-start by key fob, app or scheduled timer is no longer executed.
Is it safe to drive with U0254?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Remote Start Module, Vehicle Bus Wiring
Related codes
- U0251Lost Communication With Running Board Control Module B
- U0252Lost Communication With Lighting Control Module Rear B
- U0253Lost Communication With Accessory Protocol Interface Module
- U0255Lost Communication With Front Display Interface Module
- U0256Lost Communication With Front Controls Interface Module A
- U0257Lost Communication With Front Controls/Display Interface Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.