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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Controls - 3.6L - Diagnosis (DTC P0351 - P1014)) >> Diagnosis >> DTC P0446 >> Diagnostic Aids

Diagnostic Aids

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An intermittent condition could be caused by a damaged EVAP vent housing, a temporary blockage at the EVAP vent valve inlet or a pinched vent hose. A blockage in the vent system will also cause a poor fuel fill condition.

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