Airbag codes
Restraint system codes. Pick your code for what it means, whether you can drive, common causes and what the repair usually costs.
| Code | What it means | Drive? | Typical, Boston |
|---|---|---|---|
| B0001 | Driver airbag circuit fault | No | $250 to $730 |
| B0020 | Side or passenger airbag circuit fault | No | $240 to $800 |
| B0100 | Front impact sensor circuit fault | No | $240 to $800 |
| B1000 | Airbag control module internal fault | No | $240 to $800 |
| B1318 | Low battery voltage at restraint module | No | $150 to $490 |
| B1325 | Restraint system voltage or circuit fault | No | $150 to $490 |
| B1342 | Control module fault (airbag or body) | No | $430 to $2,350 |
| B1421 | Restraint circuit fault (varies by make) | No | $260 to $830 |
Typical range, estimate, for the most common repair for each code. Prices updated October 2026. Not a repair shop, estimates only.