Emissions - MIL ON/DTC P0442 (EVAP System Leak)

TSB 04-15-15

08/09/04

DIAGNOSTIC TROUBLE CODE (DTC) P0442

FORD:
2003-2004 Crown Victoria

LINCOLN:
2003-2004 Town Car

MERCURY:
2003-2004 Grand Marquis

ISSUE

Some 2003-2004 Crown Victoria/Grand Marquis and Town Car vehicles may exhibit a malfunction indicator light (MIL) with DTC P0442 (Evaporative Emission System Leak Detected (small leak)) in memory. This may be an erroneous DTC set due to a partial blockage (rather than a leak) of the fresh air vent hose connected to the canister vent valve. A spider nest may cause this blockage.

ACTION

Perform a smoke machine phase 1 - leak verification pressure test per the PC/ED. If a leak is indicated, proceed with normal leak detection diagnostics. If there is no leak indicated, remove and visually inspect the fresh air vent hose for a spider nest or other such blockage. Clear the hose by blowing out with compressed air and clear the DTC.

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage

OPERATION DESCRIPTION TIME

041515A Inspect And Clear The 0.6 Hr.
Fresh Air Vent Hose
(Includes Time To Check
For Diagnostic Trouble
Codes, Perform
Evaporative Static Leak
Test, And Clear Codes)

DEALER CODING
CONDITION
BASIC PART NO. CODE
9K318 55





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