Well, I just got myself a Bluetooth obd reader. I pulled error codes and got one grey code (applications term not mine) as U1900. Looked around and found it would mean many things, where none are easy to diagnose Anyway, I'm not feeling any abnormalities with the drive so I'll pass.

Later on I saw an option like "vehicle test results". And I saw some sensors are red flagged, don't what what they are, don't know what they mean. I attached some pictures and was hoping someone could clarify these red ones for me. I'd like to fix them if they mean something important.

Most of you already know I'm a rookie trying to learn what I can, so go easy on me please

P.S. I disconnected the hvac blend door actuator in the back cause it was making the infamous thumping sound. Thats the only thing that is out of the ordinary. (may mean nothing but I thought you might like to know).






This is the only error code:

 

There are only 2 sensors per bank, not 3. Since there is no 3rd sensor, this would explain the error code. You can ignore it.

 

Thank you Alloro, you've been very helpful as always.