B00CA code meaning
Passenger Seat Occupant Position Sensor D
What B00CA means
B00CA is position input D, the fourth for the passenger seat. Its use is not documented by any carmaker. Optical sensing is one way to fill such a slot: a patent family of Automotive Technologies International, going back to 1995, places imagers with infrared lighting at the A-pillar, in the headliner or on top of the dashboard, two arrays spaced apart for depth, and calls an occupant out of position once head or chest come within about 5 inches of the airbag door. Pattern recognition separates a rear-facing child seat from a person, and the authors judge ultrasound with roughly 10 ms per update as too slow for tracking during a crash. For the passenger, FMVSS 208 permits dynamic suppression and prescribes no method. With B00CA stored, that view is lost and the airbag warning shows.
B00CA 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 B00CA
- Airbag warning lamp on
- Out-of-position suppression for the passenger no longer available
- Safety note: airbag system; work at pillar, headliner or dashboard only de-energised (ignition off, battery off, wait time), recheck sensor alignment afterwards, specialist workshop only
Common causes of B00CA
- Most likelyLead to sensor D damaged at the pillar, headliner or dashboard after trim or glass work
- PossibleSensor view blocked or lens dirty, for example by stickers or accessories
- PossibleInternal fault of position sensor D
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Passenger occupant position sensor dSRS roof wiringOccupant position module
What each part of B00CA 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). |
| CA | The exact fault in that area. |
What to do next
- Note B00CA 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 B00CA
What does B00CA mean?
B00CA means "Passenger Seat Occupant Position Sensor D". B00CA is position input D, the fourth for the passenger seat. It is a generic code, so it means the same on every make.
Is it safe to drive with B00CA?
B00CA does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B00CA fail an emissions test?
B00CA 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 B00CA to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B00CA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.