B0056critical severityBody
Rear Left Seat Belt Pretensioner Circuit
on 2021 Audi S5 3.0L Turbo V6 · AWD
What this code means
Malfunction in the rear left seat belt pretensioner deployment circuit.
Symptoms
- Airbag/seatbelt warning light on
- SRS code stored
- Rear left pretensioner inoperative
Common causes
- Faulty pretensioner
- Wiring damage under rear seat
- Connector issue
- Water damage from rear window leak
Diagnostic steps
- Scan SRS codes
- Inspect rear left pretensioner connector
- Check wiring under rear seat
- Look for moisture damage
Repair notes
Replace pretensioner or repair wiring. Check for water intrusion.
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