U0154: Lost Communication With Restraints Occupant Sensing Control Module
CriticalNetwork/CommunicationCommunication Bus
What does U0154 mean?
U0154 is a diagnostic trouble code indicating "Lost Communication With Restraints Occupant Sensing Control Module". The vehicle's main computer has lost its ability to communicate with a specific module over the data bus. This could be caused by a wiring fault, a blown fuse, or a failed control module.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Noticeable change in engine performance
- Unusual sounds or vibrations
- Possible issues with communication bus operation
- Vehicle may enter reduced power mode (limp mode)
Estimated repair cost
Typical range in Australia (parts + labour)
$200 – $1500 AUD
Common causes
- Failed control module
- CAN bus wiring fault or short
- Blown fuse to the affected module
- Water intrusion in a connector or module
- Battery voltage too low
What should you do?
This is a critical issue. Stop driving as soon as it is safe to do so and have the vehicle inspected immediately. Continuing to drive could cause further damage or pose a safety risk.
Get a diagnosis for YOUR car
Code U0154 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.