Hi guys,

The check engine light on my 2001 C240 came on again. This time I took it to Autozone to get it check and the test came back with these codes, P0170 and P0173. It said that it's the FUEL COMPENSATION FOR BANK 1 AND FUEL COMPENSATION FOR BANK 2. Has anyone had this problem before? Where are these fuel compensation sensor, rgulators, relays or whatever those things are located? Most important, How can I fix it? It doesn't sound too complicated so I'm going to give it a shot. Like always, thanks in advance for you all help and I'll appreciate any inputs. This forum is AWESOME!!!!!!!

 

My 1998 C280 gave the same ODBII codes (P1070 & P0173) back in 2002. It also felt like it lacked power. I replaced the MAP sensor. Power was restored, and the codes have never re-appeared.