timmified100

I just fixed codes P0171 & P0173 on my '01 C320. I diaogonosed the problem with my OBD2 meter and with much help on this fourm, came up with the mass air flow censor. Replaced. Now it runs great but a few days later, I'm getting code P0410. Erased it twice, but it returns. I was hoping that I would find alot of feed like I did on the mass air flow but this new code doesn't seem common on this model. Anyone know of a common problem to start looking for on this model? Tim