Quote:
Originally Posted by ShibaYuki
Yes. Brand new gaskets from the dealer. Torqued to spec. Brand new rear O2 sensor. Re flashed to stock then flash back to stg2 UEL 91 oct.
Update(not so much) 3:
I have been driving around the city for an hour after I reflashed it and I haven't gotten the actual CEL on the car. But I check at the OFT ECU fault codes. The P0171 code is popping up there. This is a dang headache. Lol.
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Unfortunatly the rear 02 is only used for cat efficiency checks and cruise fueling minor adjustments.
if you have an oiled air filter definitly clean the maf sensor
probably clean maf sensor anyway and check for intake air leaks
The front 02 is the primary sensor used for engine fueling measurements.
If p0171 came back you still have a problem if no leaks it likely ptimary front o2 is damaged
All engine ecu codes are cleared on reflash or engine ecu reset, P0171 is an engine ecu code. Other control units may retain codes like body computer vsc computer ect when engine ecu is reset.
If the P0171 came back you still have a problem, did the front o2 sensor unscrew easily and did it look ok ? was it scrwed all the way in ?