B0042
Side Crash Sensor Communication Error - Right
2017-2020 Toyota 86 2.0L H4
Critical SeverityBodyGeneric (SAE)
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
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0042 on Other Vehicles
Toyota 4Runner
2003-2009 4.0L V6
Toyota 4Runner
2003-2009 4.7L V8
Toyota 4Runner
2010-2024 4.0L V6
Toyota Alphard
2023-2025 2.4L I4 Turbo T24A-FTS
Toyota Alphard
2023-2025 2.5L I4 Hybrid A25A-FXS
Toyota Aqua
2011-2021 1.5L I4 Hybrid 1NZ-FXE
Toyota Aqua
2021-2025 1.5L I3 Hybrid M15A-FXE
Toyota Avalon
2005-2012 3.5L V6
Common Questions
What does code B0042 mean on a 2017-2020 Toyota 86?
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 Toyota 86?
Common symptoms of B0042 include: Airbag warning light on, SRS code stored, Right side airbag protection degraded.
What causes B0042 on a 2017-2020 Toyota 86?
Common causes of B0042 include: Damaged wiring in door or B-pillar, Faulty sensor, ACM bus fault.