# P0440 on the 2004 Buick Regal

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 P0440

- [10013138](https://open.wenmarpro.com/bulletins/10013138), 2005-04-08: DIAGNOSTIC TROUBLE CODES P0440 AND P0455, ALONG WITH A LOOSE FUEL CAP MESSAGE DISPLAYED ON THE DIC ON VEHICLES WITH 3800 ENGINE APPLICATIONS. \*TT
- [10005487](https://open.wenmarpro.com/bulletins/10005487), 2004-03-01: LOOSE FUEL CAP MESSAGE AND DIAGNOSTIC TROUBLE CODE \(DTC\) P0440, P0455. \*TT \*MJ