Quote:
Originally Posted by Sportsguy83
I wanted to update I resolved my issues with the CEL P0301.
The closed loop/open loop transition in my car while running E85 was EXTREMELY rich, (AFR went down to 9) and this caused a misfire condition.
I asked my tuner to lean out the transition and now it only goes down to about 10.2, no more CEL.
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Was it in open loop or was it in close loop? Not entire sure what you mean by transition because it is either in close or open? or was the target/MAF scale incorrect?
Looks like plenty of guys have had this after a tune, they either get it replaced under warranty and someone bought aftermarket coilpacks and spark plugs instead...