# P0420 on the 2004 Mazda RX\-8

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

- [10008057](https://open.wenmarpro.com/bulletins/10008057), 2004-07-21: MAZDA SPECIAL PROGRAM \(MSP04\) \- ENGINE NO START, LACK OF POWER, DIAGNOSTIC TROUBLE CODES P2107, P2108, P2402, OR P0420 \- POWERTRAIN CONTROL MODULE \(PCM\) REFLASH. \*TT