B0090: Active frontal rollover restraint sensor
Drive carefully. Get it checked within a week or two.
Can I drive with B0090?
Yes, but drive carefully and get it checked soon. The airbag or seat belt system has a fault and may not protect you in a crash. The car still drives, but get it inspected soon.
What does B0090 mean?
B0090 stands for Active Frontal Rollover Restraint Sensor.
Symptoms you may notice
- Airbag / SRS warning light illuminated continuously on dashboard
- Steering wheel controls or horn inoperative (if clock spring)
- No engine drivability issues, but safety restraint system is disabled
How much does it cost to fix?
Repair costs for code B0090 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Defective rollover sensor in center console or B-pillar
- Water intrusion in floor pan wiring harness
- Loose mounting bolt on the impact sensor
- Faulty restraint control module
What to do next
- Have the airbag and seat belt restraint system checked by a professional technician soon.
- Do not ignore the airbag warning light, as critical safety restraints may fail to deploy.
- Check for loose wire harness connectors under the seats or along the steering column.
Last updated: October 2026
Related codes
General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code B0090 indicates an issue with the sensor responsible for detecting rollover dynamics in SUVs and trucks. In a rollover event, curtain airbags and seatbelt pretensioners may fail to trigger. Have the system inspected promptly.