B0012: Right Front/Passenger Frontal Stage 2 Deployment Control
The SRS module has detected a fault in the second-stage deployment circuit of the front passenger airbag. The dual-stage charge cannot be triggered as designed and the airbag warning lamp is illuminated.
What B0012 means
B0012 is a generic OBD-II body code in the airbags & restraints group.
- Check engine light
- Usually off
- Emissions-related
- No
- Limp mode possible
- Not typical
- Drive cycle to clear
- Not required
Get it fixed
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Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
- 01Stage 2 squib circuit openMost likely
- 02Faulty connector at passenger airbagPossible
- 03Passenger airbag module internal faultLess likely
Can I drive with B0012?
The car drives, but it is a safety risk.
With an airbag or restraint fault stored, one or more airbags or pretensioners may not deploy in a crash. Get it diagnosed soon and do not ignore a lit airbag light.
Why we rate it urgent
- An airbag or seat-belt pretensioner may not work in a crash
- Does not normally turn on the check engine light
Severity is our rule-based rating from the code’s flags in OBDex and the system it affects, not an inspection of your car. If the check engine light is flashing, or you notice overheating, low oil pressure, or brake or steering problems, stop driving and get help.
How to diagnose B0012
- 1
Confirm the code and save freeze-frame data
Read the codes with an OBD-II scan tool and note every code, not just B0012. Save the freeze-frame data (speed, load, temperature when the fault set) before clearing anything; it tells you when the fault happens.
- 2
Check for related codes first
Look for B0011. Related codes often share a cause; a circuit or sensor code usually needs fixing before a performance code like this one.
- 3
Check live data
Watch the related sensor and actuator readings in live data (Passenger airbag module, SRS control module, SRS wiring) and compare them with expected values in the service information for your vehicle.
- 4
Test the likely causes in order
Start with the most likely cause and work down: Stage 2 squib circuit open; faulty connector at passenger airbag; passenger airbag module internal fault. Test before replacing parts.
- 5
Check for recalls and service bulletins
Look up recalls for your exact vehicle with its VIN, and ask a dealer about technical service bulletins (TSBs). Manufacturers sometimes issue software updates or extended warranties for known faults.
- 6
Clear the code and verify the repair
After the repair, clear the code and drive the car under the conditions in the freeze-frame data to confirm it does not return.
B0012 repair cost estimate
Estimate, not a quote. Labor times are typical ranges for this code from OBDex, and $125/hr is an assumed rate. Shop rates and labor times vary by vehicle and region. Diagnosis time may be billed separately.
- DIY difficulty
- Hard
- Good DIY job?
- Usually a shop job
Involved testing or major parts. Most owners use a shop.
Parts and systems involved
- Passenger airbag module
- SRS control module
- SRS wiring
B0012 FAQ
What does B0012 mean?
B0012 means “Right Front/Passenger Frontal Stage 2 Deployment Control”. The SRS module has detected a fault in the second-stage deployment circuit of the front passenger airbag. The dual-stage charge cannot be triggered as designed and the airbag warning lamp is illuminated.
Is B0012 serious? Can I keep driving?
We rate B0012 as urgent severity. The car drives, but it is a safety risk. With an airbag or restraint fault stored, one or more airbags or pretensioners may not deploy in a crash. Get it diagnosed soon and do not ignore a lit airbag light.
What causes B0012?
The most common causes, from most to least likely: Stage 2 squib circuit open; Faulty connector at passenger airbag; Passenger airbag module internal fault. Test before replacing parts, because several causes can set the same code.
How much does it cost to fix B0012?
Typical labor is about $125–$440 at an assumed $125/hour shop rate, plus parts. That is an estimate, not a quote: labor times and rates vary by vehicle and region, and diagnosis may be billed separately.
Can I fix B0012 myself?
DIY difficulty is hard. Most owners leave this to a shop because it needs involved testing or specialist tools. Always confirm the cause before buying parts.
Will B0012 clear itself?
If the fault was intermittent, the warning may go off once the computer stops seeing it, but the code stays in memory. Fix the cause; clearing the code alone doesn’t repair anything.