Guys,
I have the following error codes on my 1999 ML 320

PO170 Bank 1
PO172 Bank 2
PO700
PO720

I changed the MAF last November when it failed but havent changed the air filter (my bad) the airfilter is an K&N oil based performance filter

I think the MAF is blown again. Could you guys please help it the later 2 codes (po700 and po720) are because of the failed MAF ?/
Thanks in Advance
PS I have a strore All european Auto Supply Inc in Detroit(http://www.alleuro.com/) that seels the BOSC MAF ?? is it good for my Truck

Thanks
vamsi