B1650Occupant classification system fault
- Toyota/Lexus code · Airbag (SRS)
- Lights a warning lamp
- How the car detects it
- The system under the front passenger seat that decides whether the passenger airbag may deploy reports a fault. Diagnose the occupant classification system itself; it may also need a zero point calibration after seat work. While an airbag fault is stored, the affected airbag or pretensioner may not deploy in a crash. Have it repaired before relying on it. Never probe airbag connectors with a meter: that can fire the airbag.
- What you may notice
- SRS (airbag) warning light
- Likely causes
- PossibleSeat wiring or connector under the passenger seat
- PossibleOccupant classification sensor or ECU
- RareAirbag control unit
- Sources
Backed by at least two independent sources.
From Obdaryn's Toyota/Lexus pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.