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Service bulletin 15504

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 id630026
Published by NHTSA2002-04-11
Manufacturer's number15504
Manufacturer's date2002-01-01
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

SOME VEHICLES MAY EXHIBIT DRIVEABILTY CONDITIONS AND/OR CHECK ENGINE LAMP ILLUMINATED WITH A DIAGNOSTIC TROUBLE CODE P0455 (GROSS LEAK DETECTED). *TT

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

P0455

Vehicles listed
FORD EXPEDITION1997, 1998, 1999, 2000, 2001, 2002
FORD EXPLORER2002
FORD F SERIES1997 to 2002
FORD RANGER1998, 1999, 2000, 2001, 2002
LINCOLN BLACKWOOD2002
LINCOLN NAVIGATOR1998, 1999, 2000, 2001, 2002
MERCURY MOUNTAINEER2002

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