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Service bulletin ASI-44387

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 id10055060
Published by NHTSA2014-04-04
Manufacturer's numberASI-44387
Manufacturer's date2014-01-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

FORD: DUE TO MALFUNCTION INDICATOR LIGHT (MIL) WITH DIAGNOSTIC TROUBLE CODE (DTC) P0128, ON SOME TRUCKS, MAY LEAD TO THERMOSTAT REPLACEMENT, IF DIAGNOSTIC IS NORMAL, USING NEW RUBBER COATED THERMOSTAT PART 7L3Z-8575-D. MODEL 2012-2014 EXPEDITION, NAVIGATOR. *PE

The document

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

Components

Engine, Cooling system

Trouble codes named

P0128

Vehicles listed
FORD EXPEDITION2012, 2013, 2014
LINCOLN NAVIGATOR2012, 2013, 2014

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

Other bulletins for the same vehicles and component
SSM 460852017-08-01. Service bulletin. The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a limited refresh rate when reading these PIDs and cannot display quickly enough to validate a concern. The PCM automatically monitors these inputs more accurately and will set diagnostic trouble codes (DTCs) when appropriate. Using these PIDs for diagnostics will lead to inaccurate results and improper ETB replacements. If a concern is intermittent and no DTCs are present, refer to historical DTCs and the PC/ED, Section 3 No DTCs Present Index chart for further information.
15-01122015-08-17. Service bulletin. FORD 2012-2014 EXPEDITION, NAVIGATOR: BULLETIN INFORMATION INVOLVING THE COOLANT EXPANSION TANK CAP LEAKING COOLANT. *LJ
ASI-444512014-05-07. Service bulletin. FORD: SOME MODEL VEHICLES MANUAL FOR POWERTRAIN CONTROL/EMISSION DIAGNOSTIC (PC/ED) HAS BEEN UPDATED REGARDING IMPROVED COOLING FAN CIRCUIT DUE TO A LACK OF AIR CONDITIONING, A MALFUNCTIONING INDICATOR LAMP (MIL) AND OVERHEATING. *PE