Oxygen sensors

So I had an issue with my drive cycle not wanting to complete. The evap monitor, the catalyst monitor, the oxygen sensor monitor and the oxygen sensor heater monitor are all incomplete. There were no fault codes or pending fault codes showing. So I monitored my oxygen sensors using a obd2 scan tool and saw that both of the downstream oxygen sensors were showing 0.0 voltage. So I tested them with a multi-meter and they were both producing 0.01 volts from the signal wire. I read that they should produce between 0.1 and 0.9 volts. So I replaced them both with brand new downstream oxygen sensors that I bought from 1aauto. Com. I took my car out for a drive and scanned it to see if the drive cycle completed. It did not complete, however I also checked for pending fault codes and it threw back two p0141 and p0161. I searched on online to see what these codes mean. According to what I found they mean the same thing just one is for bank 1 sensor 2 and the other is bank 2 sensor 2. They mean that there is either a short circuit in the heater circuit or that there is excessive resistance in the heater circuit. So what do I do now? Do I contact 1aauto. Com to return them? What are the chances of buying two new oxygen sensors and they both be faulty? Or is it something else maybe?