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B0080 B0xxx · 车身（B） 中严重度
Passenger Presence / Occupant Classification System
The system that decides whether an adult is sitting in the passenger seat has failed. The airbag is typically suppressed as a precaution.
严重程度说明： 中——已影响行驶或排放，请本周内安排检修
你会注意到的故障现象
- Passenger airbag off lamp stuck on
- Airbag warning lamp
- Warning message on the cluster
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Failed occupant classification sensor mat
- 2 Calibration lost after seat removal
- 3 Damaged wiring under the seat
- 4 Control module fault
如何排查
先做花钱最少、侵入最小的检查——大多数这类码不是零件问题。
- ✓ Check whether the seat was recently removed — recalibration is often required afterwards.
- ✓ Read the classification ECU for sensor status and calibration state.
- ✓ Inspect the wiring and connectors under the seat.
- ✓ Run the manufacturer's re-zero procedure with the seat empty.
维修方案
- Recalibrate the occupant classification system
- Repair the wiring
- Replace the sensor mat (seat cover removal required)
B0080 —— 常见问题
Why is the passenger airbag now disabled? +
It is a deliberate failsafe: if the system cannot tell whether someone is there, it suppresses deployment.
Can a heavy bag on the seat cause it? +
It can confuse classification temporarily, but a stored code means there is a real fault or a lost calibration.