OBD2 code B0042: Airbag system - Sensor or airbag
Airbag system (SRS) fault.
Detected Root Component
Body Component
Observed Symptoms
- Airbag light on
Possible Causes
- Faulty impact sensor
- Broken clockspring
- Faulty SRS module
- Airbag connector disconnected
Tools Required
Interactive Diagnostic
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Diagnostic Result
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Parts likely to be the cause (Boîtier fusibles / BSI)
Boîtier fusibles / BSI
Photo d'illustration : Boîtier fusibles / BSI
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Frequently asked questions about code B0042
What does code B0042 mean? ▾
OBD2 code B0042: Airbag system - Sensor or airbag. Airbag system (SRS) fault.
What are the symptoms of code B0042? ▾
Code B0042 may cause: Airbag light on. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code B0042? ▾
The most common causes of code B0042 are: Faulty impact sensor, Broken clockspring, Faulty SRS module, Airbag connector disconnected. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code B0042? ▾
Yes, code B0042 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code B0042? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Faulty impact sensor, Broken clockspring, Faulty SRS module, Airbag connector disconnected. Difficulty: moderate · Estimated time: 45-75min.