# P0420 on the 2014 Honda Civic

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.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0420

- [10224788](https://open.wenmarpro.com/bulletins/10224788), 2022-10-24: Service Bulletin \- Sensors on the vehicle may have misinterpreted the catalyst as deteriorated. Update the PGM\-FI software if P0420 is present.