B0025 code meaning
Left Side Deployment Stage 2 Control
What B0025 means
No public J2012 code list contains B0025, and no manufacturer publicly describes a second stage of a left side airbag under this number. The only trace is at General Motors: the Saab 9-4X 2011 manual groups B0025 with the roof rail airbag codes B0016 and B0023 but gives no descriptor for it. Two-stage side airbags are rare in any case. A Ford patent notes that thorax, pelvis and head bags usually have a single inflation setting because of their small size, and the dual-chamber side airbag described by Autoliv divides one cushion into chest and pelvis zones rather than firing twice. If B0025 appears, the descriptor and module name on the scan tool decide what is meant. Airbag lamp on; the affected bag may not deploy.
B0025 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0025
- Airbag warning lamp on
- Side or curtain protection may be reduced on the affected side
- Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed
Common causes of B0025
- PossibleOpen, shorted or high-resistance squib loop of the airbag the module assigns to this code
- PossibleConnector or its position lock not fully engaged
- Less likelyFault or unsuitable software in the restraint control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Driver side airbagSRS control module
What each part of B0025 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 25 | The exact fault in that area. |
What to do next
- Note B0025 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B0025
What does B0025 mean?
B0025 means "Left Side Deployment Stage 2 Control". No public J2012 code list contains B0025, and no manufacturer publicly describes a second stage of a left side airbag under this number. It is a generic code, so it means the same on every make.
Is it safe to drive with B0025?
B0025 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0025 fail an emissions test?
B0025 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B0025 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B0025 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.