Airbag code
B1325: Restraint system voltage or circuit fault
How much to fix B1325? Typically $150–$470.
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $120 | $320 |
| Labor: 0.3 to 0.8 hours × $110 to $150 an hour | $33 | $120 |
| Fees: shop supplies, disposal, diagnostics | $0 | $25 |
| Total, rounded | $150 | $470 |
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, battery replacement. Which repair your car needs depends on a proper diagnosis.
On many cars, this code means the airbag computer sees a bad supply voltage or a problem with the ignition feed. The airbag system needs a steady voltage to stay ready, so low or uneven voltage can set a restraint code even when the airbags themselves are fine. It can mean something different on other makes.
- Safe to drive?
- No, get it looked at first
- Most common cause
- Weak or old battery
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.
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What you may notice
- Airbag light on
- Light may come and go
- Other warning lights when voltage is low
- Hard starting if the battery is weak
Common causes, most likely first
- Weak or old battery
- Loose or corroded battery terminals
- Poor ground connection
- Alternator charging poorly
- Airbag module fault (less common)
Check this first
Test the battery and charging system and clean the terminals. Low or uneven voltage is a common cause.
Other repairs that sometimes fix B1325
| Repair | Typical range, US |
|---|---|
| Battery cable replacement | $100 to $340 |
| Alternator replacement | $360 to $930 |
| Airbag / occupant sensor replacement | $220 to $750 |
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).
B1325 questions
Can a weak battery turn on the airbag light?
Yes. Low voltage can set restraint codes even when the airbags are healthy. If your car has been slow to start lately, the battery is a likely cause, and testing it costs little.
Will the light go off after a new battery?
The code usually needs to be cleared with a scan tool after the battery is replaced. The light may go out by itself after several good drive cycles, but it is not guaranteed.
Is the airbag off?
It may be. Treat the airbags as off until the problem is checked and the light is out. A shop can tell you whether the airbag system is armed or whether it is in a fault state.
How much does it cost to fix B1325?
The most common fix, battery replacement, has a typical range of $150 to $470 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 | $150 to $490 |
| New York City area | $150 to $480 |
| Los Angeles area, California | $150 to $490 |
| Chicago area, Illinois | $150 to $470 |
| Houston area, Texas | $150 to $470 |
| Dallas-Fort Worth area, Texas | $150 to $470 |
| Phoenix area, Arizona | $150 to $470 |
| Atlanta area, Georgia | $150 to $470 |
| Miami area, Florida | $150 to $470 |
| Seattle area, Washington | $150 to $490 |
Related codes
- B1318: Low battery voltage at restraint module
- B1000: Airbag control module internal fault
- B1342: Control module fault (airbag or body)
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.