bboyer32

Ok, I've read plenty about the Mass Air Flow sensor trigoring the Check Engine Light (which I have), and I have read out the OBD codes...P0171 anf P0174. I know this means both banks of cylinders of running "lean", and this is commonly an issue of the Mass Air Flow sensor. I am going to try and clean it first, prior to the possibility of replacing it. But could it just be an oxygen sensor? Or does that throw a different code?

I'm just trying to determine if this could be either one of the O2 Sensor, or the MAF sensor. I don't want to go purchasing a MAF sensor if it could be an O2 sensor. If so, how would I determine it's an O2 sensor?

sosh

You can tell if the computer used to do the read out is a correct unit, ie the MB Star diagnostic system.

mleskovar

Did clearning the MAS and resetting the code work?

ohlord

benzworld.org w210 diy section,take the insert out and use only CRC brand maf cleaner.
http://www.autohausaz.com/search/pro...0Mass%20Sensor
$168 bosch.
Changed your fuel filter?That will trip those codes also.
ohlord