# P0420 on the 2001 Cadillac Escalade

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

- [10010197](https://open.wenmarpro.com/bulletins/10010197), 2004-11-05: P0420 AND P0430 DTSC IN THE DETROIT, MICHIGAN AREA WITH GEN III V\-8 ENGINES. \*SC