# P0638 on the 2000 Saturn LS

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 P0638

- [10011533](https://open.wenmarpro.com/bulletins/10011533), 2005-01-26: SERVICE ENGINE SOON \(SES\) AND/OR REDUCED POWER LAMP ILLUMINATING FOLLOWING COLD ENGINE START UP IN SUBFREEZING TEMPERATURES, DIAGNOSTIC TROUBLE CODES \(DTC\) P0638, P1510 AND/OR P1516 STORED IN ENGINE CONTROL MODULE \(ECM\). \*TT