Originally Posted by
ls01
Also swapped out o2 sensors #1 on both banks. New m.a.f. and m.a.p. runs real nice. But still shows (now) 51.5% ethanol. Left are -14. -1-1ish . Will this reset itself after while or do I need to reset it with a scanner?
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Having dealt with this dozens of times the only way I know is to reset everything with a Tech2. A Snap-On scanner would work.