Guess it's a lean failure code DTC both banks on a 06 Tacoma 4.0.
I do not have licences for this vehicle, only my 05 corvette which I have retuned a couple of times.

If I have no O2 sensor reading and a flatlining Low MAF signal what do you think is the problem? i can't imagine both of the upstream O2 sensors failing. Any Ideas? Besides asking questions on the forum do you know of a overall trouble shooting manual that you can use with HP tuners?
Thanks sorry of the noobie questions.