B00C0 code meaning
Passenger Seat Occupant Classification Sensor A
What B00C0 means
B00C0 flags the first of up to five classification inputs in the front passenger seat. Their job comes from FMVSS 208: the passenger bag must stay off when a 12-month dummy sits in a listed child restraint or a newborn dummy lies in a car bed, yet it must be live for a 5th percentile woman, and a yellow PASSENGER AIR BAG OFF lamp reports the suppressed state. Honda's 2013 Fit shows a typical weight solution: sensors in the seat switch the bag off at 29 kg or less, the off lamp may flicker when the load sits near that limit, and bags hanging from the seat back or a rear passenger pushing on it can upset the reading. No carmaker publishes B00C0, and which sensor the letter A names is left open. The airbag lamp lights and classification falls back to a safe default.
B00C0 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 B00C0
- Airbag warning lamp on
- Passenger airbag off lamp shows a state that does not match the occupant
- Safety note: passenger airbag may be wrongly enabled or disabled; seat and sensor plugs only de-energised, recalibrate the classification after repairs, specialist workshop only
Common causes of B00C0
- Most likelyLoose plug or chafed wire to input A under the passenger seat, often after the seat was removed
- PossibleClassification sensor A itself delivers no or an implausible signal
- Less likelyObjects under the seat, items hanging on the seat back or pressure from the rear disturbing the measurement
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Passenger classification sensor aSRS seat wiringOccupant classification module
What each part of B00C0 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). |
| C0 | The exact fault in that area. |
What to do next
- Note B00C0 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 B00C0
What does B00C0 mean?
B00C0 means "Passenger Seat Occupant Classification Sensor A". B00C0 flags the first of up to five classification inputs in the front passenger seat. It is a generic code, so it means the same on every make.
Is it safe to drive with B00C0?
B00C0 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B00C0 fail an emissions test?
B00C0 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 B00C0 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B00C0 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.