B0028 code meaning
Right Side Airbag Deployment Control
What B0028 means
B0028 is the right-hand twin of B0020: the firing loop of the right front side airbag, normally in the outer flank of the passenger seat. Honda asked for parts from 2018-20 Accord and CR-V and from the 2015 TLX that stored B0028-13, an open or raised resistance in the passenger side airbag inflator. FCA traces B0028-13 on the Cherokee and Chrysler 200 to the jumper harness in the seat, and Toyota's 2022 Tundra stored B002811 or B002812 because the wireless phone charger disturbed the module. Mitsubishi confirms a short to ground after 2 seconds. The older GM numbering differs: the 2006 Saab 9-5 and the 9-3 used B0028 for low resistance in the passenger side bag loop, under 1.5 ohms. Airbag lamp on.
B0028 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 B0028
- Airbag warning lamp on
- Right front side airbag may not deploy in a side impact
- 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 B0028
- Most likelyPoor contact or corrosion at the side airbag connector or jumper harness under or in the seat
- PossibleInternal fault in the right seat side airbag inflator
- PossibleLead pinched or stretched by seat adjustment
- Less likelyRestraint module software reacting to interference (Toyota Tundra 2022)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Right side airbag moduleSRS control moduleSRS seat wiringSeat harness connector
What each part of B0028 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). |
| 28 | The exact fault in that area. |
What to do next
- Note B0028 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 B0028
What does B0028 mean?
B0028 means "Right Side Airbag Deployment Control". B0028 is the right-hand twin of B0020: the firing loop of the right front side airbag, normally in the outer flank of the passenger seat. It is a generic code, so it means the same on every make.
Is it safe to drive with B0028?
B0028 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0028 fail an emissions test?
B0028 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 B0028 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B0028 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.