what does the engine code P0171 bank system too lean P0300 misfire mean for a 2008 chevy equionox

Question

Light goes off and on. Thought it was the gas cap. After the machine read the codes the light went out

Answer 1

if the codes come back you will have to get the car checked for intake leaks first.

P0171 and P0300 can mean there is a leak somewhere in the intake system