# P0621 on the 2003 Saturn Ion

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 P0621

- [10005570](https://open.wenmarpro.com/bulletins/10005570), 2004-03-04: SERVICE MANUAL UPDATE REGARDING TROUBLESHOOTING TABLE FOR DIAGNOSTIC TROUBLE CODE \(DTC\) P0621. \*TT
- [10005285](https://open.wenmarpro.com/bulletins/10005285), 2004-02-19: SERVICE MANUAL UPDATE REGARDING TROUBLESHOOTING TABLE FOR DIAGNOSTIC TROUBLE CODE \(DTC\) P0621. \*PH