# P1635 on the 2002 Lincoln Town Car

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 P1635

- [636052](https://open.wenmarpro.com/bulletins/636052), 2002-11-04: INOPERATIVE OR INACURRATE SPEEDOMETER, 4X4 LAMP ILLUMINATD, AND / OR DIAGNOSTIC TROUBLE CODE P1635 OR P1639. \*TT