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Service bulletin ONP/94B56

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 id37922
Published by NHTSA1995-02-07
Manufacturer's numberONP/94B56
Manufacturer's date1994-12-01
NHTSA componentELECTRICAL SYSTEM:IGNITION

NHTSA's summary

CORROSION BETWEEN THE TAMPER SENSOR AND THE IGNITION SWITCH CASTING MAY CAUSE FALSE ACTIVATION OF THE ANTI-THEFT ALARM SYSTEM. *TW

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

Electrical system, Ignition

Vehicles listed
FORD ECONOLINE1992 to 1994
FORD F SERIES (LIGHT)1994
LINCOLN MARK1993, 1994
LINCOLN TOWN CAR1991, 1992, 1993, 1994

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
9760111999-07-26. Service bulletin. SUBJECT REGARDING IGNITITION SYSTEM TEST SUCCESS STORY. *TT
951021995-11-01. Service bulletin. VEHICLES MAY HAVE A DISCONNECT OF THE IGNITION CONTROL MODULE (ICM) CONNECTOR OR MOISTURE BUILDUP WITHIN THE CONNECTOR. *TW