Volvo :: Heat Stopped Working, Code 132 At Every Diagnostic

I have an issue with my 960 wagon. When I first got the car this past July, the AC light was flashing. I ignored it because I didn't really need the AC. I knew the heat worked fine, which I need up here in the northeast. However, a week ago or so the heat suddenly stopped working. It worked fine in the morning. I parked the car in a lot, came back about five hours later, and no heat.

I found the sheet with the AC diagnostic codes on it, and followed the procedure to get the codes.

[URL]........................

I'm getting the code 132 every time I do the diagnostic, and sometimes I also get 161. Of the three times on three different days I've done the diagnostic, the 161 only came up once.

In-Vehicle Temperature Sensor

Open Circuit Or Short Circuit To 12 Volts .......... 132

Solar Sensor ......................................... 161

I'm not sure where the in-vehicle temperature sensor is. Is it in the dome light? It says the "courtesy light fixture" in the docs, so I'm not sure this is the same thing. The dome light is not currently connected in my car. I have two of them in the garage but neither ever produced light when plugged in, and the heat worked fine all during that time, so I didn't worry about it. It was only until a week ago or so that the heat stopped working.

The temp panel controls work fine. Blower blows as needed, vents switch no problem. Recirculate actuates. No heat.