Side Crash Sensor Communication Error - Right
2007-2007 Cadillac CTS 3.2L V6
The 2007 Cadillac CTS is equipped with a 3.2L V6 engine. Below you'll find detailed b0042 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Communication loss between the right side crash sensor and the airbag control module.
Symptoms
- Airbag warning light on
- SRS code stored
- Right side airbag protection degraded
Common Causes
- Damaged wiring in door or B-pillar
- Faulty sensor
- ACM bus fault
Diagnostic Steps
- Scan SRS codes
- Check passenger B-pillar connector
- Inspect door wiring
- Test sensor bus
Repair Notes
Repair wiring or replace right side crash sensor.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0042 on Other Vehicles
Common Questions
What does code B0042 mean on a 2007-2007 Cadillac CTS?
B0042 stands for "Side Crash Sensor Communication Error - Right". Communication loss between the right side crash sensor and the airbag control module.
What are the symptoms of B0042 on a Cadillac CTS?
Common symptoms of B0042 include: Airbag warning light on, SRS code stored, Right side airbag protection degraded.
What causes B0042 on a 2007-2007 Cadillac CTS?
Common causes of B0042 include: Damaged wiring in door or B-pillar, Faulty sensor, ACM bus fault.
Last updated: March 2026