OBD2 code B0055: Restraint/airbag sensor circuit – body code guide
B0055 is a body-area trouble code tied to the restraint system sensor circuit. Meaning varies by manufacturer; inspect impact sensor wiring and connectors before replacing parts.
Detected Root Component
Body Component
Observed Symptoms
- Airbag warning light stays on
- Restraint system may be disabled
- Intermittent chime at startup
Possible Causes
- Impact or occupant sensor circuit fault
- Corroded or loose connector under seat or B-pillar
- Damaged wiring harness
- Faulty restraint control module
Tools Required
Interactive Diagnostic
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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 B0055
What does code B0055 mean? ▾
OBD2 code B0055: Restraint/airbag sensor circuit – body code guide. B0055 is a body-area trouble code tied to the restraint system sensor circuit. Meaning varies by manufacturer; inspect impact sensor wiring and connectors before replacing parts.
What are the symptoms of code B0055? ▾
Code B0055 may cause: Airbag warning light stays on, Restraint system may be disabled, Intermittent chime at startup. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code B0055? ▾
The most common causes of code B0055 are: Impact or occupant sensor circuit fault, Corroded or loose connector under seat or B-pillar, Damaged wiring harness, Faulty restraint control module. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code B0055? ▾
Yes, code B0055 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code B0055? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Impact or occupant sensor circuit fault, Corroded or loose connector under seat or B-pillar, Damaged wiring harness, Faulty restraint control module. Difficulty: Easy · Estimated time: 30-60min.