B0320Passenger Seat Position Sensor Circuit
- Generic OBD-II code · Body
- How the car detects it
- None of the J2012 lists on hand names B0320, and no vehicle maker publishes a definition. The title concerns position feedback on a powered front passenger seat, which exists mainly where that seat has memory or an easy-entry function. Saab's 9-3 passenger seat module uses B2375 for its fore-aft sensor: 01 when the input exceeds 7 ± 0.2 V, 04 for an open line; either way memory functions stop and calibrated end stops are lost. US6320341B1 avoids a separate sensor by counting the current ripple of the DC motor, while US5751129A builds the sensors into the memory module. The driver-side counterpart is B0310; fore-aft motor faults on this seat are B0570.
- What you may notice
- Passenger seat memory or easy-entry does not work
- Seat jerks when starting or stopping
- Likely causes
- LikelyPosition sensor in the passenger seat motor failed
- LikelySeat loom damaged by objects or feet under the seat
- PossibleSensor signal shorted to supply voltage
- RarePassenger seat module input faulty
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.