check engine codes
codes:
P0173
P0170
thanks!
clean it per the diy on benzworld.org w210 diy section with crc brand maf cleaner.If that does not clear the code after you do the cleaning,replace the insert for about 135 bucks from germanstar.net.easy diy for the first timer.
ohlord

as to what they mean ,they are fuel trim values sent from the o2 sensors to the maf and then regulated by the engines computer to keep you air fuel ratio at the
balance it needs.When the maf is dirty or gone bad it does not relay the correct info to the ecu and trip the codes you have.Don't ignore cel in the future a fuel ratio problem left long term will fry your cats.
ohlord
Last edited by ohlord; Feb 1, 2008 at 06:24 PM.
ohlord
also i notice if i push it hard (did it once while parked) it coughs or hiccups or skips w/e you like to call it
any thoughts?



