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Robbie

Robbie 9/23/2011

2008 Pontiac G6 Base 6 Cyl 3.5L

Preventive Maintenance

What does code po442 mean on the 2008 Pontiac G6?

Code

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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