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B0001 B0xxx · ボディ (B) 重大度高
Driver Frontal Stage 1 Deployment Control
A fault in the driver's frontal airbag first-stage deployment loop. This is a safety system — the airbag will not fire correctly until it is repaired.
重大度の目安： 高 — 走行を止めてすぐに診断してください。さらに損傷が広がる恐れがあります
確認できる症状
- Airbag warning lamp on
- Possibly no horn or steering-wheel buttons
- Airbag disabled
主な原因
可能性の高い順に並んでいます。上から順に確認してください。
- 1 Open or high resistance in the squib circuit
- 2 Faulty clock spring under the steering wheel
- 3 Damaged connector under the seat or column
- 4 Failed airbag control module
点検・修理の手順
費用が安く侵襲の小さい項目から — これらのコードの大半は部品の問題ではありません。
- ✓ Do not probe airbag circuits with a test lamp — use a load resistor and follow the manufacturer's safety procedure.
- ✓ Read the airbag ECU for the specific loop resistance fault.
- ✓ Inspect the clock spring first; it is the highest-failure item in this circuit.
- ✓ Check connectors under the dash for loose or pushed pins.
修理の選択肢
- Replace the clock spring
- Repair the squib wiring or connector
- Replace the airbag module only after circuit checks
B0001 — よくあるご質問
Is the airbag live while I test? +
Disconnect the battery and wait the manufacturer-specified time (usually 10–15 minutes) before touching any yellow connector.
Can I clear the code and ignore it? +
No. The restraint system will not deploy as designed, and the lamp will return immediately.