OBD-II code · Body
B0128 Passenger Occupant Detection System Malfunction
The passenger occupant detection system (ODS), used to enable/disable the passenger airbag based on weight, has reported a malfunction.
Is it safe to drive with B0128?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySeat sensor mat failure
- PossibleODS calibration lost after seat work
- PossibleLoose ODS connector
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Occupant Detection Sensor, Passenger Seat, Srs Control Module
Related codes
- B0125Driver Side Mirror Position Sensor
- B0126Passenger Side Mirror Position Sensor
- B0127DC/AC Converter A High Voltage Power Outlet "A" Circuit/Open
- B0129DC/AC Converter A High Voltage Power Outlet "C" Circuit/Open
- B012ADC/AC Converter A High Voltage Power Outlet "D" Circuit/Open
- B012BDC/AC Converter A High Voltage Power Outlet "E" Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.