2006 Chevy Trailblazer EXT LS-P0442 code

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AmyJo
Posts: 3
Joined: Tue May 16, 2017 5:03 am
Vehicle: 2006 Chevy Trailblazer EXT LS

2006 Chevy Trailblazer EXT LS-P0442 code

Postby AmyJo » Tue May 16, 2017 5:19 am

Check engine light comes on when my gas tank is close to 1/4 tank. Code P0442 code comes up under diagnostics. Gas cap has been checked and is ok. Any ideas what could cause this, or what to try replacing first? :roll:


kev2
Posts: 6522
Joined: Sat Aug 29, 2009 4:24 pm

Re: 2006 Chevy Trailblazer EXT LS-P0442 code

Postby kev2 » Tue May 16, 2017 6:59 am

The EVAP* tests do run with regard to fuel level.
Some basic info -
https://www.obd-codes.com/p0442

*these are the so called 'gas cap' codes as that is 1st thing to check.

AmyJo
Posts: 3
Joined: Tue May 16, 2017 5:03 am
Vehicle: 2006 Chevy Trailblazer EXT LS

Re: 2006 Chevy Trailblazer EXT LS-P0442 code

Postby AmyJo » Tue May 16, 2017 7:31 am

Thank you! I am guessing that as long as my gas tank stays above the 1/4 tank my EVAP tests will not properly detect this issue...I hate seeing the light but don't want to ignore the issue. Gas cap is good..already checked. I will have to see if I can have the smoke test done to hopefully find the issue quicker.

kev2
Posts: 6522
Joined: Sat Aug 29, 2009 4:24 pm

Re: 2006 Chevy Trailblazer EXT LS-P0442 code

Postby kev2 » Tue May 16, 2017 7:38 am

The evap system is not a critical issue - Yes you can plan on when to repair.
A common code and smoke testing is easiest and very common. Good luck.

Be advised erasing codes erases a lot of info not just the code.

AmyJo
Posts: 3
Joined: Tue May 16, 2017 5:03 am
Vehicle: 2006 Chevy Trailblazer EXT LS

Re: 2006 Chevy Trailblazer EXT LS-P0442 code

Postby AmyJo » Tue May 16, 2017 7:51 am

Thanks for the information!


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