My engine light is on and have spent thousands of dollars to get it resolved. on 2007 Chrysler Aspen

I replaced the O2 sensors, fuel pump,intake manafold, exhaust manafold, exhaust,and now the computer. Still have the same problem lean on bank 1.... What else can it be?

3 answers 1 comment
sounds like a vac leak on bank 1 did you have a smoke test done lately.that may show you a small leak poss under dash or poss mass air flow sensor. did you do the work or a shop?
Chrysler, seems to be a parts changer rather than a mechanic.
Perhaps its time to have a good technician do the diagnostics and fix the problem. Not anything I could tell you other than guessing at parts to replace and that has not worked so far.
You have a vacuum leak