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TSB
98-23-25
  • MALFUNCTION INDICATOR LAMP (MIL) - MIL LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P0455 STORED IN MEMORY - VEHICLES BUILT THROUGH 11/30/97 EQUIPPED WITH E4OD TRANSMISSION AND 5.4L ENGINE
  • LAMP - MALFUNCTION INDICATOR LAMP (MIL) - MIL LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P0455 STORED IN MEMORY - VEHICLES BUILT THROUGH 11/30/97 EQUIPPED WITH E4OD TRANSMISSION AND 5.4L ENGINE
Publication Date: NOVEMBER 16, 1998

LIGHT TRUCK:
1997-1998 EXPEDITION, F-150
1998 F-250 LD, NAVIGATOR

This TSB article is being republished in its entirety to include 1998 model year vehicles as well as Navigator and F-250 LD vehicles.

ISSUE:

The Malfunction Indicator Lamp (MIL) may illuminate and Diagnostic Trouble Code (DTC) P0455 may be stored in memory. This may be caused the Vapor Management Valve (VMV) vacuum supply line coming in contact with the Exhaust Gas Recirculation (EGR) valve body.

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