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Service bulletin 9858

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id601298
Published by NHTSA1998-07-20
Manufacturer's number9858
Manufacturer's date1998-03-16
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

THE MALFUNCTION INDICATOR LAMP (MIL) MAY ILLUMINATE AND DIAGNOSTIC TROUBLE CODE (DTC) P0503 MAY BE STORED IN MEMORY. *YC

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Trouble codes named

P0503

Vehicles listed
FORD EXPEDITION1997, 1998
FORD F-1501997, 1998
FORD F-2501997, 1998
LINCOLN NAVIGATOR1998

Listing a model year does not mean every vehicle of it is concerned: the document says which.