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Long Term Fuel Trim

Post here with any questions regarding the use of the i2 on supported Chevrolet, GMC, Cadillac, Buick, and Pontiac applications.

Moderator: sohfast94

Post Thu Dec 06, 2018 6:46 pm

Posts: 38
I have been doing some logs and for some reason my LTFT is stuck at 1. It doesn't change dependent on speed or engine rpm or engine load. I have PO2270 and PO2272 showing bank 1 and 2 lean. So I was trying to see how lean I was running. Does this sound like bad O2 sensors? I tried to log some of the O2 sensor information but I am not sure which one I should log. I can do a log tomorrow and upload then. Just checking what all I should log.


Post Thu Jan 10, 2019 2:48 pm

Posts: 38
I fixed this myself as well. Apparently now the i2 has 2 sets of LTFT I have to select when I log. One seems stuck and the others respond.

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