Code P042E 2009 Chevrolet Equinox

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Code P042E 2009 Chevrolet Equinox

Unread post by IAcntryboy » Sat Feb 23, 2013 1:57 pm

I get a check engine light with service stabiltrak, turns off the stabiltrak. Scanned and found codes PO42E. Also feel some surging at low speeds

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Re: Code P042E 2009 Chevrolet Equinox

Unread post by ProTech » Sun Feb 24, 2013 9:50 pm

Ok, the code P042E is for the EGR system and is a 'closed position performance' code. This would explain the surging as well, since there is a problem with the EGR valve and it's most likely causing a vacuum issue. The stabilitrak will normally be disabled when a trouble code like this pops up, so that is why that light is on too.

You probably just need to replace the EGR valve, clear the code and you'll be all set. You might want to quickly inspect the wiring at the EGR connector for any trouble, but if you had wiring issues, other codes would normally set, so I'm betting it's just a bad EGR valve.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+


Re: Code P042E 2009 Chevrolet Equinox

Unread post by guest » Mon Apr 29, 2019 1:03 pm

I changed the EGR valve and tube and a new connector and still get the code about every 100 miles

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