Quote:
Originally Posted by Jeffman
I also notice it only with E85 usage. I got it this morning just after two 2000-6000 WOT pulls in third gear. I'm running a mildly agressive (18 psi but not lots of extra timing) PTF E20 map. Didn't get this code earlier in the week during adaptations, grocery store "runs", etc. It looks like my LPFP dipped down to about 43 psi during the run, adn the HPFP dipped down to about 2200 psi. Anyone have any ideas?
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I get this fault code stored when I run 30% ethanol, but never saw it when I was running 20% -- though I was on a less aggressive map on the 20%.
I wouldn't be too worried about this fault on it's own. I see this code on a lot of stock cars. BMW even has a service bulletin stating not to worry about it unless there are other fuel system related faults stored. As long as your AFR and fuel trims look good, I wouldn't be worried. It is a sign that you might be reaching the limits of the stock in-tank pump, though.