Truck won't set emission monitors

[Buzzard2]

I have a 2012 6.2 that can't pass smog as my Catalyst, OXY and OXY heat sensors are unset. Had a code for a dirty mass air sensor but never got to a check engine light. Cleaned the MAS and cleared the code have driven the truck for two days over 100 miles and the those three sensors won't reset. I know the Cat takes a while but if I can get the other two set I could get my registration.

I bought the truck used from a private party, I have a receipt showing Outlaw off road did a 5 star tune back in 2012 no idea what tune. I don't think that is the issue as the truck has been registered yearly since then.

 

[pastorwug]

The heated 02 sensor is a real tough one to set. Google the procedure, it's pretty weird.
Stick to the very specific speeds and resting times and it should reset.
It';s an older truck so you may want to think about getting new sensors, they're not expensive. That won't automatically set the sensor for you but it may be somewhat easier.

 

[Buzzard2]

Flashed the computer back to stock, removed the cold air intake cover drove about 80 highway miles and she was good to go. All sensors in the Ready setting.

 

[Buzzard2]

Flashed the computer back to stock, removed the cold air intake cover drove about 80 highway miles and she was good to go. All sensors in the Ready setting.