I have gotten the p0171 code before on e85. It was due to running out of gas. I was draining the tank before refilling on 93 and just drained it to far. I cleared the code. Has not been back since.
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Originally Posted by reeves
I've been having a minor E85 startup issue, started a few weeks ago.
It now takes 2 cranks to startup my car (in warm weather) if I leave my car sitting for a whole day/night (9+ hours or longer).. still starts up fine on 93 octane though, I just tried it with 93 this week. Always 2 cranks on E85 though.. no more, no less.
Not saying this is at all related to to fuel filter/pump issue.. just thought I'd post in case anyone else had similar startup issues with E85. Temps rarely drop below 65-70 degrees in the mornings/evenings now, since May.
On a possibly related note.. these 3 CEL codes popped up last week too:
P0402 (current fault) - Catalyst system effeciency below threshold (* appeared by itself 3 weeks prior to this, but went away the next day)
P0463 (current fault) - Fuel Level sensor circuit high input
P0171 (pending fault) - System too lean (bank 1)
It happened while I was cruising lightly towards E85 station, with less than a gallon of gas left in the tank.. had to stepped on the brake kinda hard when someone pulled out in front of me. That's when the CEL lit up. Could've been because the car lurched forward with so little gas left in the tank (0.7 gallons according to Torque app), I might've ran lean for just a SPLIT second. Not really sure, but the CEL went away the next day.
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