i have a 2011 ram 1500 laramie 4x4 with the 5.7 hemi my i used the auto start on tuesday to get the ac going and it turned itself off then when i started it with the key the check engine light was on. so i took it to a shop and it is showing that all 4 of my 02 sensor heater circuit or whatever is out on all 4 we don't think that all 4 would go out at once and I'm not sure what it could be anyone have any ideas or had this problem yourself?