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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449) >> DTC P0455 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The EVAP system is not able to achieve or maintain a calibrated level of vacuum within a set amount of time.