ilove190evo

Aloha guys. My E320 is showing it's age. Fix one problem and here comes another. Yeah, I know. You fix something, other weak link will show up. Problem I'm having is pretty minor, nothing major, so I can live with it. Eliminating one by one. Trying to bring her to healthy condition.

Now, on to the problem. After I dealt with my damn mistake ( I looked at the brake booster vacuum line the wrong way and it crumbled on me. Maybe I hurted it's feeling by not checking at it), my CEL keep coming on. Pulled the code, and I got P0110, P0170-023 and P0173-134. Since then, I've replaced the MAF and code P0110 is gone, but I still have the same P0170 and P0173 code. Thinking it was vacuum leak from somewhere, I've already did the carb cleaner test at obvious places and all passed.

Anybody have any experience or know what these codes are? Or what to do or where to look? Car runs fine but the damn engine light have me bothered. I just want to take care of that light!

P0170-023 --- Self adaptation of mixture formation control module N3/10 (ME-SFI [ME] control unit) adaptation "idle speed" is at limit value

P0173-134 --- Self adaptation of mixture formation control module N3/10 (ME-SFI [ME] control unit) "idle speed" for left bank of cylinder at limit value

Plutoe

clear the faults------what if any return

ilove190evo

Thanks Plutoe. But I have cleared the code twice and only the two code keep coming back. It's on my scanner for the third time. Scanner is from Foxwell with Mercedes app in it. If I may add, I do about 15-20 minutes commute to my work in the morning, no code during these drives. Engine temp up in the normal operating range. When I'm done with my work, going home is little longer with 20-30 minutes of driving due to people don't know how to drive (called traffic). I'll get the CEL around 10-15 minutes of driving in the traffic. Temp is in normal operating temp but it goes up little faster due to traffic and outside temp been little higher during the day.

Any idea? I'm still searching for some kind of vacuum leak but none found so far.