B0055critical severityBody
Passenger Seat Belt Pretensioner Circuit Short
on 2021 BMW i3 42 kWh Single Motor RWD · RWD
What this code means
Short circuit detected in the passenger seat belt pretensioner deployment circuit.
Symptoms
- Airbag/seatbelt warning light on
- SRS fault stored
- Unintended deployment risk
Common causes
- Wiring insulation damage
- Pinched wire
- Moisture in connector
- Squib failure
Diagnostic steps
- Disconnect battery
- Inspect wiring
- Check connector condition
- Measure isolation resistance
Repair notes
Repair short or replace pretensioner assembly immediately.
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
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0009
Rear Center Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment