OBD-II code · Network
U0250 Lost Communication With Impact Classification System Module
The vehicle bus reports loss of communication with the impact classification module. Decisions on airbag deployment force, seat-belt pretensioning and post-crash actions can no longer use the inputs from this node.
Is it safe to drive with U0250?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Impact Classification Module, Vehicle Bus Wiring
Related codes
- U024DLost Communication With Seat Control Module J
- U024ELost Communication With Side Obstacle Detection Control Module C
- U024FLost Communication With Side Obstacle Detection Control Module D
- U0251Lost Communication With Running Board Control Module B
- U0252Lost Communication With Lighting Control Module Rear B
- U0253Lost Communication With Accessory Protocol Interface Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.