check engine light back on again

HO2 Sensor Bank 1 Sensor 1 harness is open or shorted
- HO2 Sensor Bank 1 Sensor 1 circuit poor electrical connection

This will be the same for both codes so check plugs and do a pin out back to the ECU and check for high resistance.

Are you saying I should check the spark plugs? And what is a pin out?

Check that the connection plugs for the sensors are not damaged, corroded or loose, a pin out is checking the wires from the O2 sensor back to the ECU for high resistance, you need to be able to use a multi meter for this.

You know i checked the resistance on both of the old sensors and they showed 9.3 which i believe is well within limits, so that kind of through me off thinking that they weren't really bad after all. Ill recheck the connections but they seemed clean and tight when i put them together. Is this the only possibility being the sensors or the wire to the Ecu?

You must prove these to be ok before moving on, the codes set direct you to where to expect the fault to be,