# P0420 on the 2015 Honda CR\-Z

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

- [10222076](https://open.wenmarpro.com/bulletins/10222076), 2022-09-27: Service Bulletin \- The MIL is on with P0420 \(Catalyst System Efficiency Below Threshold\). Sensors on the vehicle may misinterpret the catalyst as deteriorated or it may have deteriorated.