CEL has come on for the third time in two weeks. First one was P-0137-O2 Sensor 1/2 Circuit Low. Took it in for service, they had the truck all day and all they said they did was erase the code, drive it to make sure it didnt come back on, and install some updates. No I'm getting the same code as well as, P-2a01-O2 Sensor 1/2 Circuit Performance. Im not looking to have them do nothing again, any ideas on what to request so this problem actually gets fixed?
Truck came with factory remote start, when these CEL's came on the truck will start remotely, then sometimes shut off within a few minutes... not sure whats the deal with this either. Thanks for the help

 

Sounds like a faulty sensor.

I know when you have a sensor go bad (oxy sensor, evap sensor (on a gasser) etc) the remote start will shut off after 30 seconds.