# C1998 on the 2004 Ford Expedition

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 C1998

- [10004061](https://open.wenmarpro.com/bulletins/10004061), 2003-11-17: VEHICLES EQUIPPED WITH ADVANCETRAC STABILITY ASSIST/INTERACTIVE VEHICLE DYNAMICS \- IVD\) MAY EXHIBIT A DIAGNOSTIC TROUBLE CODE C1998. \*TT