02 sensor issues

Good afternoon all, I have recently had some reoccurring issues with my Lambda2 reading 0, or off. It does this at random times, regardless of weather, gas, etc. It stopped for around a month, as the car had been sitting, but recently started again. This happens during driving, flashing on and...

Hey guys! So we recently replaced the spark plugs and 02 sensors on Scott's 2015 Mustang GT. For those of you who are not familiar with Scott's car here is a quick rundown: Stainless Power Catted Longtubes, Corsa Extreme 3" Catback, GT350 Intake Manifold with Stock Throttle Body, PMAS, 47LB...