The B0092 code on your 2021 Hyundai Sonata indicates a malfunction in the occupant classification system (OCS). This code affects your Sonata's ability to detect passenger presence and weight, which determines whether the passenger airbag should deploy and at what force.
Understanding B0092 on Hyundai Sonata
The OCS uses sensors in the passenger seat to detect if a passenger is present and classify their weight/size. This allows the SRS to disable or modify airbag deployment to prevent injury to small occupants or when the seat is empty. Code B0092 indicates the system cannot properly classify the occupant.
Common Symptoms
- Airbag warning light on
- Passenger Airbag Off indicator issues
- Indicator may show 'Off' with adult passenger
- Indicator may show 'On' with empty seat
- System defaults to deployment-enabled as safety measure
Primary Causes
- Faulty occupant classification sensor (weight sensor)
- Damaged wiring under passenger seat
- Seat belt buckle switch issue
- Water damage to seat sensors
- Objects under seat affecting sensor
- Seat frame damage affecting sensor mounting
Diagnostic Procedure for 2021 Sonata
SAFETY: Disable SRS before seat inspection. Using Hyundai GDS or compatible scan tool, access OCS data. Place known weights on the passenger seat to test sensor response. Inspect wiring under passenger seat for damage. Check seat belt buckle switch function. Look for water damage or debris affecting sensors. Verify sensor mounting in seat frame.
Repair Solutions
Clean debris or objects interfering with seat sensor. Repair damaged wiring under seat. Replace faulty occupant classification sensor or bladder. Replace damaged seat belt buckle switch if contributing to fault. In some cases, entire seat base may need replacement. Clear codes and verify proper OCS function with different weight loads.