Persistent P0037 Code

[Brighton]

Oh, that's not a fun code to chase. I don't know if it'll help but I'd get yourself a can of electrical parts cleaner and spend a good hour or so disconnecting every single plug in the engine bay and spraying the connectors out with the cleaner. Leave them disconnected long enough for the cleaner to evaporate and also leave the battery disconnected while you do this. I'd also remove and sand/clean all the ground wires you can find. That code can be caused by connections, grounds or wire shorts so it's best to do the cheap tedious stuff before throwing money at it imo