I’ve been getting these 2 codes. Car runs fine. Clear the codes. They come back about 20 minutes after driving. Today I had the air conditioning on. And the check engine light didn’t come on !?!? Any idea of why ? Thx in advance

 

Those codes are indicating you are lean on both bank 1 and bank 2.

Probably start by removing and cleaning the MAF sensor with a specific MAF sensor cleaning aerosol that you can pick up from your nearest auto store.
You are also going to want to look for any air leaks that are introducing additional air arriving into the intake after the MAF sensor but before the throttle body, this as far as the engine management is concerned is unmetered air and is one of the causes of the two error codes you have.
The accordion hose that attaches to the throttle body can develop splits or could simply be not fitted and clamped properly.
Any other pipes or tubes that enter the intake manifold can cause unmetered air, so brake booster pipe, the IMT valve O rings etc.

If those suggestions don't bear any fruit, then you might be looking as fuel delivery....clogged fuel filter or low fuel pressure leaning our the engine........fuel pressure you should be able to get a live reading from your scanner.

Why when the AC is on you have less errors.......the engine management will automatically add add fuel (to raise RPM) as it expects the AC compressor will be adding extra loading to the engine at low revs is my best guess. That may simply be enough to mask the problem a bit.