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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System & Fuel System - 1.8L (Lay) - DTC P0441 To DTC P2A00) >> DTC P0455 or P0456 >> Circuit/System Testing >> Blockage/Restriction Testing

Blockage/Restriction Testing

WARNING: This page is about a different variant/trim than selected.
  1. Verify the following conditions do not exist in the EVAP system:
    • A plugged or restricted EVAP filter
    • A plugged or restricted air inlet pipe or hose
    • If a condition is found repair or replace the affected component.
    2. IMPORTANT: The EVAP canister assembly contains passages and internal valves that need to be tested for blockage and restrictions.
  2. Test the operation of the EVAP canister and EVAP vacuum leak pump assembly. Refer to Evaporative Emission Control System Diagnosis .
    • If a condition is found replace the affected component.
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