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Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls - Self-Diagnostics Introduction- EEC-V - Gasoline & NGV) >> System Tests (Evaporative Emission) >> Test B: DTC P0455: Major Leak Or No Flow Detected In EVAP System Or DTC P1443: Very Small Or No Purge Flow Detected In EVAP System >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

Perform this test only when directed by QUICK TEST. DTC P0455 will be set in PCM when it senses a -7 in. H2 O (-1.74 kPa) drop over 30 seconds. DTC P1443 will be set in PCM when it senses a -7 in. H2 O (-1.74 kPa) drop over 30 seconds with more than .02 lb. per minute vapor flow.

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