ivan209

hey everyone, my check engine light has been on for about 2 months now and i finally ran a diagnostic...it threw code P0171B....it also said,Bank 1 System Too Lean.... i also noticed that im not getting good gs mileage anymore...does anybody know what this code is?its 2005 c230 ss...thanks...

chuang

I have the same problem with my 2004 c230. A friend of mine who is a car technician said that it's probably "Intake System leaking" or "Exhaust System leaking" and with low mileage (< 50,000 miles), it shouldn't be a big problem and don't have to worry about it. Also see:

http://wiki.ross-tech.com/index.php/18609/P2177/008567
and
http://www.benzworld.org/forums/w203...0171-code.html
and
http://www.justanswer.com/questions/...-too-lean-mean
and
https://mbworld.org/forums/c-class-w...nsors-etc.html

Hope this helps!