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Robbie 9/23/2011
2008 Pontiac G6 Base 6 Cyl 3.5L - Preventive Maintenance
What does code po442 mean on the 2008 Pontiac G6?
1 Answer
  • my_ynoh
    my_ynoh 9/23/2011
    P0442 means Evaporative Emission Control System Leak Detected (small leak). P0422 is triggered when the PCM senses that there’s a fuel vapor leak (very small leak) in the EVAP control system.

    Possible Causes:

    * Check engine light on
    * Incorrect or defective gas cap
    * Defective vent o-ring seal
    * Small leak or hole in the EVAP system and/or in the fuel vapor hose or tube

    Possible solutions:

    * Remove and reinstall gas cap
    * Replace gas cap
    * Replace vent o-ring seal
    * Repair or replace fuel vapor hose or tube and/or the leaking component in the EVAP system

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