p0171

Does anyone have any model specific pointers as to what to look for on a 2010 E350 petrol throwing P0171 & P0174 codes? I am assuming an air leak is the most obvious fault? I can see nothing obvious but it is difficult to look at the back of the engine.

hi,sorry if this has been covered before but i have an intermittent e.m.l and my reader is giving p0171 code-engine running lean bank 1. i have searched and found that there are 2 breather pipes that are the usual suspects for this fault,i have one(part number A2710181282 CRANKCASE BREATHER...

Hi I have searched around a bit but could not find anyone with the same issue that i am having. I drive a 2005 Merc C230K sports coupe with not quite 40,000 miles on the clock. A few weeks back it put up a lot of codes, misfire, running rich/lean which were cleared and I didnt write...

Looking for some help here guys. Ive had the engine management light on for months but car runs fine ( although fuel consumption is terrible ). Was told it was error code P0171. Had it cleared. it came back . Had it cleared again. It came back. Last night I bought an OBD2 reader and sure enough...

HI all, my first time posting and I guess I have come to a point where I really do need some help. I have a W203 2003 C Class Coupe C180k Auto, since I have purchased this car (6 months ago) I have had a few issues, at the moment, I have a few outstanding ones which I am hoping maybe someone can...

So I've had then engine check light on for a few weeks now, though the car seems to run ok. I bought a USB ODB2 scanner from Ebay (great seller and product btw - if anyone is interested in buying let me know) and read the fault code. This is what I got back: P0171 System too Lean (Bank 1)...