# P0420 on the 2000 Honda Odyssey

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

- [10004795](https://open.wenmarpro.com/bulletins/10004795), 2004-01-08: MALFUNCTION INDICATOR LAMP IS ON WITH DIAGNOSTIC TROUBLE CODE P0420 \(CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD\) IS STORED. \*TT \*MJ