OBD-II code · Network
U0134 Lost Communication with Restraints System Sensor (Side Sensor)
The airbag control module has stopped receiving data from a side impact sensor. Airbag warning lamp lights up; restraint deployment for side and curtain bags may be inhibited.
Is it safe to drive with U0134?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- PossibleSide impact sensor failed
- PossibleWiring damage in door or B-pillar
- Less likelyGateway module routing CAN messages incorrectly
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
- 0.8–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Side Impact Sensor, Airbag Module, Sensor Wiring
Related codes
- U0131Lost Communication with Power Steering Control Module
- U0132Lost Communication with Ride Level Control Module
- U0133Lost Communication with Yaw Rate Sensor Module
- U0135Lost Communication with Parking Brake Control Module
- U0136Lost Communication with Park Brake Module B
- U0137Lost Communication with Trailer Brake Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.