B00C1 code meaning
Passenger Seat Occupant Classification Sensor B
What B00C1 means
B00C1 belongs to input B of the passenger seat classification. It is unpublished as such, but Toyota shows why a seat can carry several such sensors: on 2012–2013 Camry, Prius c and Yaris and 2013 Avalon, a left and a right weight detector sit between seat frame and rails. Their readings decide whether the passenger bag is armed, and they also serve as collision sensing. In campaign F0B (about 753,200 US cars) Toyota found that some seating habits or rough roads were taken for a rear impact, lighting the airbag lamp and AIR BAG OFF; dealers fitted new sensors, torqued them to 30 N·m, zeroed the system and verified its sensitivity. Whether B stands for such a right-hand cell is not documented. With B00C1 the airbag lamp is on.
B00C1 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B00C1
- Airbag warning lamp on
- Passenger airbag off lamp lit although an adult is seated
- Safety note: passenger airbag status may be wrong; disconnect seat sensors only de-energised, keep tightening torques and run the zero-point calibration with the scan tool, specialist workshop only
Common causes of B00C1
- PossibleLoad cell B damaged or drifting, for example after the seat was forced or dropped
- PossibleSeat pan or sensor bolts fitted under tension or with the wrong torque, preloading the cell
- PossibleZero-point calibration not done after sensor or seat work
- Less likelyPoor contact at the plug of sensor B
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Passenger classification sensor bSRS seat wiringOccupant classification module
What each part of B00C1 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). |
| C1 | The exact fault in that area. |
What to do next
- Note B00C1 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 B00C1
What does B00C1 mean?
B00C1 means "Passenger Seat Occupant Classification Sensor B". B00C1 belongs to input B of the passenger seat classification. It is a generic code, so it means the same on every make.
Is it safe to drive with B00C1?
B00C1 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B00C1 fail an emissions test?
B00C1 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 B00C1 to fix?
Difficulty: workshop only. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will B00C1 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.