# P1423 on the 2002 Audi A6

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.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name P1423

- [10022452](https://open.wenmarpro.com/bulletins/10022452), 2007-08-15: MIL ON \(DTC'S P0300, P0411, P1128, P1130, P1411, P1423\). THIS COULD BE CAUSED BY A CRACKED OR BROKEN VACUUM HOSE. \*KB