911andchips

so yesterday my 997.2 threw codes p0171 and p0174.
after doing some research I found that one of the causes could be loose oil filler cap. as I had just added oil I checked and sure enough cap wasn't tightened. still needed another quarter turn to lock.
will these codes clear themselves? and if yes how long should it take?

Bruce In Philly

2009 C2S 182K miles

I did the same... like a genius, I cross-threaded the cap. Yes, the codes should clear themselves.

Peace
Bruce in Philly (now Atlanta)

8x57IRS

The drop must always fall vertically :-)