My gf's SVT(Shugarl0) threw a cel last night. We stop at advance and the code was P0125 (low coolant temp). I had noticed on a couple of occassions that her oil temp gauge looked as if it wasnt working(needle all the way down). The coolant temp is running lower than mine usually does as well. Is this most likely a thermostat problem or a sending unit on the oil temp gauge that has gone bad. Any advice is welcomed.