Mountaineer V8-302 5.0L VIN P EFI (1998)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - MIL ON/DTC's P0420/P0430
Article No.
04-7-5
04/19/04
DRIVEABILITY - MALFUNCTION INDICATOR LAMP
(MIL) ILLUMINATED - DIAGNOSTIC TROUBLE CODES
(DTC'S) P0420 AND/OR P0430
FORD:
1998 EXPLORER
MERCURY:
1998 MOUNTAINEER
This article supersedes TSB 03-25-1 to update the vehicle lines.
ISSUE
Some 1998 Explorer/Mountaineer vehicles equipped with the 5.0L engine may exhibit a malfunction indicator lamp (MIL) on with diagnostic trouble
code(s) P0420 (Catalyst System Efficiency Below Threshold - Bank 1) and/or P0430 (Catalyst System Efficiency Below Threshold - Bank 2).
ACTION
To service, reprogram the powertrain control module (PCM) to the latest calibration using WDS release B28.3 or higher. Replacement of catalysts is no
longer necessary to address the most common causes of this condition.
Obtain an Authorized Modifications Decal (FPS 8262 - obtainable through DOES II, 25/pkg) and list the date, dealer number, and summary of
modifications performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized
Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
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