2007 Toyota Corolla Code P0171 Changed Mas After Week Running Car Check Engine

2007 TOYOTA COROLLA
51,230 MILES
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ANONYMOUS
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I have the code P0171 and have changed the MAS. After a week running the car the check engine light came on again. The car runs fine with no side effects. I also checked the gaskets and have found no leak. I dont know what my next step should be. I dont want to spend a lot of $$ taking it into a shop since they were the one to tell me to change the MAS.

Should I change the O2 sensor next? Dont know what to do.

Thanks for the help
Nov 27, 2012 at 3:38 PM
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KHLOW2008
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Is the code same as previous?

A TSB was issued on this. Contact your dealer for more information. An extended warranty of 96 months or 80,000 miles applies and your vehicle should still be eligible for it.
Nov 27, 2012 at 3:59 PM
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