I have had issues with the right rear turn signal saying it was out (especially in the colder weather) even though it still works with the emergency lights (I can also fix it by removing and reinstalling the bulb). I also had a P0672 (#2 glow plug) which returned even after I replaced the (what turned out to be a functional) glow plug. I reset the error code with my OBDII scanner but it came back a couple of hours later. I also have an error with brake wear which is also false. These are all sensors that might be considered resistive. Could these problems be related and caused by another common sensor that determines resistance, perhaps?

 

That seems unlikely as the error codes occur before the engine is even running.
Thanks, Dave