B0033critical severityBody
Side Impact Sensor Circuit - Left Front
on 2016 Audi A4 2.0L Turbo I4 · AWD
What this code means
Malfunction in the left front side impact sensor. This sensor triggers side airbags and curtain airbags during a driver-side impact.
Symptoms
- Airbag warning light on
- SRS fault code
- Side airbag system compromised
- No driving symptoms
Common causes
- Faulty side impact sensor
- B-pillar wiring damage
- Connector loose or corroded
- Door replacement without reconnecting sensor
Diagnostic steps
- Scan SRS codes
- Inspect B-pillar or door-mounted sensor
- Check connector engagement
- Measure sensor circuit
- Verify door-to-body wiring
Repair notes
Replace side impact sensor or repair wiring in B-pillar or door.
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