New OBD II codes - 5.6.2017 P0153 P0133 How to fix?

Hi, no I haven't replaced the O2 sensors, that may be next. After we smoked the engine and found 3 un-attached hoses, the engine light went out. Thank you for your fast reply, time and answer! Are you confident and are the signs showing and saying to replace the O2 sensors???? There are 4 of them I think??? **The reason I haven't changed the O2 sensors right away is because of how EXPENSIVE the O2 sensors are and also the cost to install them. I have placed alot more money into the car than we had anticipated, but.....DEQ said I am very, very close to passing!!! The DEQ April 16th, 2017 said Failure: EVG "Not Ready" and one more item "not ready", then this Saturday the [Engine Light" went on.