p1155 code shows up once temperature in the area drops below 30F.

Question

Is it possible for the heat sensor to be unable to heat up to the required 1200F in this weather? Or could it be that the cold damaged the heater circuit?

Answer 1

Unfortunately I haven't had that problem before, but cold weather could cause poor connection at the sensor. I suggest start by checking the sensor connector. Make sure the sensors are clean and dry. If the problem persist you may have to replace the sensor.