Thanks for the info. I first noticed this code back in July up in the White Mountains (temp ~55 deg) in the mornings. After I reset the code it didn't set again until the last couple weeks. It just started setting again since it turned cool by Tucson, AZ standards ~ 50 deg in the early AM. I will check for a short and have ordered the relay (on back order at the local dealer). We have a trip planned up to the mountains next week and I'm concerned about starting without the Intake heater working. I will let you know what I find out.