Airbag code
B1000: Airbag control module internal fault
How much to fix B1000? Typically $220–$750.
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $90 | $400 |
| Labor: 1.2 to 2 hours × $110 to $150 an hour | $132 | $300 |
| Fees: shop supplies, disposal, diagnostics | $0 | $50 |
| Total, rounded | $220 | $750 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in the US, $27.13 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
This is the range for the most common fix, airbag / occupant sensor replacement. Which repair your car needs depends on a proper diagnosis.
The airbag computer ran a self-check and found a problem inside itself. Many makes use this code for a module fault, but it can vary, so check the scan tool or manual. Low voltage, wet carpets or a damaged wire can also trigger it, so they are worth ruling out before a replacement.
- Safe to drive?
- No, get it looked at first
- Most common cause
- Failed airbag control module
The airbag system may be turned off, so the airbags may not deploy in a crash. Get it checked soon and avoid putting children in the front seat.
Get quotes from local shops
Got B1000? Tell us your ZIP and a shop near you can quote the repair. Free, takes a minute.
Fair Price is not a contractor or a repair shop. Who sees your request
What you may notice
- Airbag light on
- Light stays on after start
- Seat belt warning acting oddly
- No other symptoms
Common causes, most likely first
- Failed airbag control module
- Low battery voltage
- Water damage under seats or console
- Wiring or connector fault
- Software or setup problem
Check this first
Check for water in the carpet near the module and test the battery. Then re-scan to see whether other airbag codes point to a circuit instead.
Other repairs that sometimes fix B1000
| Repair | Typical range, US |
|---|---|
| ECU / engine control module replacement | $410 to $2,250 |
| Battery replacement | $150 to $470 |
| CAN bus wiring repair | $170 to $1,125 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Many states require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
B1000 questions
Do I need a new module?
Sometimes, but other codes or wiring faults can look the same. Ask the shop to check for water under the seats, test the battery, and read all airbag codes before replacing the module.
Can the module be reset?
Some can be cleared, but if the fault is real it returns. A reset that does not hold means something is still wrong, and the airbags may not work in a crash until it is fixed.
Does a crashed car's module need replacing?
Often yes after the airbags have deployed, since the module stores crash data and its internal parts may be used up. Ask the shop what the manufacturer calls for on your car.
How much does it cost to fix B1000?
The most common fix, airbag / occupant sensor replacement, has a typical range of $220 to $750 across the US. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Typical range in 10 metro areas
Only the labor rate changes between cities. Same parts, same hours.
| Area | Typical range, estimate |
|---|---|
| Boston area, Massachusetts | $240 to $800 |
| New York City area | $230 to $780 |
| Los Angeles area, California | $230 to $790 |
| Chicago area, Illinois | $220 to $760 |
| Houston area, Texas | $210 to $740 |
| Dallas-Fort Worth area, Texas | $210 to $740 |
| Phoenix area, Arizona | $220 to $750 |
| Atlanta area, Georgia | $220 to $760 |
| Miami area, Florida | $210 to $750 |
| Seattle area, Washington | $240 to $790 |
Related codes
- B1342: Control module fault (airbag or body)
- B1325: Restraint system voltage or circuit fault
- B1318: Low battery voltage at restraint module
More airbag codes
Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.