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P1729 on the 2000 Ford Crown Victoria

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. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P1729
143102001-08-07. Service bulletin. SOME VEHICLES MAY EXHIBIT AN INCORRECT P1729 (4X4 LOW SWITCH) DIAGNOSTIC TROUBLE CODE (DTC) IN CONTINUES MEMORY. *TT

1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.