Wonder if anyone can help me?
 
I have a 2013 Astra GTC with an ongoing problem where the car will drop to limp mode.
With a code reader it has shown that the problem is “P2084 - exhaust gas temperature sensor, circuit range/performance bank 1 Sensor 2”

I erase the codes, but they do not disappear from the unit completely (they still remain on the list, but cannot be read once erased) and the car will be fine for a few months before the car goes in to limp mode and I have to erase the cod