# B12C5 on the 2017 Honda Pilot

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name B12C5

- [10187552](https://open.wenmarpro.com/bulletins/10187552), 2021-02-26: Owner Notification Letter \- The vehicle may not start upon first press of the ENGINE START/STOP button. Also, the MID displays the error message KEYLESS START SYSTEM ERROR, and DTC B12C5 \(Engine Start/Stop Switch Failure\) is stored. American Honda is extending the warranty on the engine start/stop switch to 9 years from the original date of purchase or 125,000 miles, whichever comes first.
- [10184330](https://open.wenmarpro.com/bulletins/10184330), 2020-12-19: Service Bulletin \- The vehicle may not start upon first press of the ENGINE START/STOP button. Also, MID displays the error message KEYLESS START SYSTEM ERROR, and DTC B12C5 \(Engine Start/Stop Switch Failure\) is stored. American Honda is extending the warranty for the keyless start system on these vehicles to 9 years from the original date of purchase or 125,000 miles, whichever comes first.