Here’s what I'm saying. If the first sensor is giving an incorrect reading then the second sensor cannot give a correct reading. After you replaced the sensor you should have unhooked the battery for about 10 min give or take. Then there is a drive cycle for the OBD2 system if there is still a problem the CEL should come back on within 50 miles of driving. If it does and you’re getting the same code then something else is causing that sensor to read incorrectly. It may or may not be the second sensor. If you can get on barefoots good side maybe he can help you. If you don't take thing to heart and don't get pissey when they say something smart allic to you, these guys are more than willing to help. Trust me I learned the hard way.