Have 2013 Chevy express 2500 and after replacing catalytic converter got new code next day P2272 02 sensor stuck lean sensor 2 bank2.
Code will clear itself and come back as soon as I fill up the gas. When gas tank gets down almost to the half code will clear itself and return again when gas is filled up.
Not sure has anything to do with gas filling up , most likely coincidence but would like some inputs what to check.
Thanks