OBD-II code · Network
U0153 Lost Communication with Restraints Control Module B
The Restraints Control Module B has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. A second restraints controller is unreachable, affecting airbag readiness. Safety-critical. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
Is it safe to drive with U0153?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySecondary SRS module unpowered
- PossibleCAN wiring to secondary SRS broken
- 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
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Restraints Control Module, Can Bus Wiring
Related codes
- U0150Lost Communication with Side Object Detection Control Module Left
- U0151Lost Communication with Restraints Control Module
- U0152Lost Communication with Side Restraints Control Module Left
- U0154Lost Communication with Restraints Occupant Sensing Module
- U0155Lost Communication with Instrument Panel Cluster
- U0156Lost Communication with Information Center "A"
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.