# P0420 on the 2002 Volkswagen Jetta

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

- [10024548](https://open.wenmarpro.com/bulletins/10024548), 2008-04-24: UPDATE PROGRAMMING, MIL ON, DTC'S P0420 AND/OR P0300\-P0306 STORED IN ECM FAULT MEMORY. \*NJ