3500hd Duramax 6.6 O2 sensor "Not Ready"
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04-19-2015 | 06:25 AM
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3500hd Duramax 6.6 O2 sensor "Not Ready"
Please Help. I have a 2011 GMC 3500 HD Denali 22k miles. I purchased a Edge Evolution CTS tuner for it and had been using it for about a year with no trouble at all. I took my truck for a state inspection (MA), they had to unplug the OBDII connection for the tuner to plug their computer in to complete the inspection and it failed on omissions with the message "O2 sensor not ready". The technician told me to drive the truck for a few hundred miles to clear all the codes created from unplugging the tuner. I did that and it still failed. I have since driven more than 600 miles in the truck and the O2 sensors are still showing not ready, I took it to the dealership and they said they could not figure it out and that I need to contact Edge (I did), Edge told me that their Tuner (Evolution CTS) does not affect the O2 sensors and that I need to go back to the dealership. I work overseas and only get home every two months therefore do not drive the vehicle much, so it has been 6 months without a valid inspection sticker. Can anyone please help me resolve this issue?
Last edited by kkelly; 04-19-2015 at 06:38 AM. Reason: Typo
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geatgavi (04-19-2015)
