Quote:
Originally Posted by mad_sb
So,
At some point on my E85 tune, I removed and unplugged my rear o2 sensor. That tune has a lot of the open to closed loop logic turned off etc etc.. Long story short, I don't have limp mode issues on that tune but I was using my own beta definition files and I'm etc etc...
I'm running a tank of 91 thorough this week to clean any gunk that may have built up on the injectors etc... So I am using an OTS 91 tune... I have already turned off the following:
P0037
P0038
P0137
P0138
P0140
P0141
I am not getting a CELL but I am in limp mode (closed loop target of 13.2 ish)
I think I had some additional dtc's in my beta deffinition possibly for P004X related to heater circuit.... but I don't have access to that deffinition at the moment.
Anyone know for sure what DTC's you need to turn off when you remove the rear 02 all together?
I know I can plug the rear 02 back in and zip tie it out of the way, but I would rather fix this now in the tune since I will fine tune the rom and keep it for my pump gas map.
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P0420 cat efficency needs to be disabled.
i think rear 02 also used for lean cruise mode and if removed completly can cause cruise economy to drop