# P0421 on the 1997 Mazda 626

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 P0421

- [604036](https://open.wenmarpro.com/bulletins/604036), 1999-03-16: SUBJECT REGARDING MALFUNCTION INDICATOR LIGHT \(MIL\) ILLUMINATION W/DTC P0421. \*YC
- [603116](https://open.wenmarpro.com/bulletins/603116), 1999-02-03: SOME VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LIGHT \(MIL\) ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE \(DTC\) P0421 STORED. \*YC