# P0420 on the 2001 Toyota PRIUS

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

- [10005244](https://open.wenmarpro.com/bulletins/10005244), 2004-02-17: MALFUNCTION INDICATOR LAMP \(MIL\) ON WITH DIAGNOSTIC TROUBLE CODE \(DTC\) P0420 DUE TO AN ELECTRONIC CONTROL MODULE \(ECM\) SOFTWARE LOGIC ERROR. \*TT