Greetings!
I have Volvo S80 V8 2008 recently I washed my car through the car wash and then the washerman told me that your car is getting leaked from the windscreen and then he told me that the blower fan is on at full speed, though the car had no ignition so I thought I could be fuse which got water and made a short circuit and I tried to dry it with blower the fuse box the one in the engine bay, it gets fine within minutes.
After like one weak I washed my car myself at home and went to the beach site it was like 450 km away ac had no issue but the day after AC compressor was working but the blower was not showing up any air in the cabin also my front seat cooling fans and front seat heaters were not working so much so on-off button LED light was not working so I thought it could be the blower resistor I changed it still the same issue with flowing error codes
Climate (Climate control - CCM (Climate control ))
DTC Description
B102F4A - Auxiliary switch- Internal fault- Permanent (Old Error Code)
B103087 - Seat heating front left- Bus fault- Permanent
B103287 - Seat heating front right- Bus fault- Permanent
B105A11 - Interior temperature sensor fan- Short circuit to ground- Permanent
B108187 - Damper motor left- Bus fault- Permanent
B108287 - Damper motor temperature right- Bus fault- Permanent
B108387 - Damper motor, recirculation- Bus fault- Permanent
B108587 - Defrosting flap motor- Bus fault- Permanent
B108687 - Air distribution flap motor- Bus fault- Permanent
B108788 - LIN bus A- Bus fault- Permanent
B108888 - LIN bus B- Bus fault- Permanent
B10894A - Auxillary switch missing- Internal fault- Permanent (old Code)
I think Its not a blower motor but could be this BUS or something else I am not sure any help please tell me what is the diagnosis, also I don't know where is this bus is located
Thanks in advance.

 

Water in the control module.

 

Thanks for the reply I was waiting for it,
But I open the control module circuit it was dry as a bone, with no sign of corrosion
though I clean it with contact cleaner afterward installed it back, and erase error codes.
except for those 12 with climate-control error codes, more ever removed air quality sensor,
t






then the extra three codes showed up which means the air quality sensor is working.
the blower motor is working with the **** turn.
Sure water corrosion (sort circuit) is there but I think somewhere else.

 

Hello I have come across this post whilst trying to fix my car
. I have very similar problem. Did you fix the issue?

Thanks

 

2008 Volvo S80, 220,000 miles, original owner here with similar issue where blower works intermittently.
> I manually turn AC off and back on, sometimes it functions. Sometimes it just runs without manipulation. Vehicle interior can get uncomfortably hot or cold.

My Climate Control Module (?) mounted in center console radio stack went bad a couple years ago.
> Floor/dash/defrost vents became unchangeable under manual or automatic settings.
> Front passenger floor vents exits climate controlled air, but drivers side front only exits AC air, but not heated. AC heated exits defrost vent on passenger side only, and works well enough that i have no frost or ice issues that an warm engine wont take care of after a few minutes.

If you have knowledge of the fix or experience with same, please advise. Thank you.
> New part was $800 plus dealer install and programming only last i checked.