Hi, I am totally new to Volvo, never had one before and just got a 93 850 few days ago.

The ECC is out of order. When ignition is turned to position ii, the blower motor will blast at maximum for about 20 seconds then turn off. It comes for on some time for a short period then off again. However, when the parking lights / headlights are on, the blower motor will blast at maximum non-stop until I turn off the lights. The AC and rec lights are flashing.

DCT yesterday, got the following:

121 Outside temperature sensor shorted to ground
123 Driver’s side interior temperature sensor shorted to ground
125 Passenger’s side interior temperature sensor shorted to ground(earth)
131 Driver’s side air duct temperature sensor shorted to ground(earth)
133 Passenger’s side air duct temperature sensor shorted to ground(earth)
135 No signal from engine coolant temperature sensor
145 Faulty signal from function selector switch
212 Driver’s side damper motor position sensor shorted to earth
222 Passenger’s side damper motor position sensor shorted to earth
232 Ventilation damper motor position sensor shorted to earth
234 Floor/defrost damper motor position sensor shorted to earth
236 Recirculation damper motor position sensor shorted to earth
321 Driver’s side damper motor active too long
323 Ventilation damper motor active too long
324 Floor/defrost damper motor active too long
412 Driver’s side interior temperature sensor inlet fan shorted to earth
415 Passenger’s side interior temperature sensor inlet fan shorted to earth
419 Faulty diagnostic signal from blower fan power stage

Seems like some wiring problems??? Any suggestion on where I should start working? Thanks!

Jason