B0063high severityBody
Passenger Seat Occupancy Sensor Circuit Short
on 1999 Lexus SC 300 3.0L I6 · RWD
What this code means
A short circuit in the passenger occupancy sensor mat causes incorrect classification readings.
Symptoms
- Passenger airbag status erratic
- Airbag light on
- Incorrect airbag staging for passenger
Common causes
- Liquid spilled on seat damaging sensor
- Pinched sensor mat wiring
- Corroded connector under seat
Diagnostic steps
- Check for moisture under seat cushion
- Inspect sensor connector
- Measure circuit resistance
- Test with known weight
Repair notes
Replace sensor mat if liquid-damaged. Repair wiring if pinched.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open
B0012
Driver Side Airbag Deployment Circuit Short to Ground
B0013
Driver Side Airbag Deployment Circuit Short to Battery