Subaru Blower Motor Dead After HVAC Service Visit

Had a similar issue with my Subaru Impreza 2006. The complete failure of the blower motor right after HVAC work often points to disconnected wiring or a damaged air quality sensor during the previous repair. In my case, the technician found the main connector plug to the blower motor had come loose during the earlier HVAC service. The wiring harness was slightly damaged where it connects to the blower motor resistor. These components are located behind the glove box and can be accidentally disturbed during other repairs. The auto recirculation function stopped working too, which was caused by the air conditioning sensor getting unplugged. This is a fairly common occurrence when working in that cramped area under the dashboard. The fix required reconnecting the loose plugs and replacing a section of the damaged wiring harness. While not a serious mechanical issue, its important to address it quickly to prevent potential short circuits that could damage the HVAC control module. Worth checking the basic fuses first, but given the timing after the recent service, its likely related to disturbed connections during that work. A qualified technician should be able to diagnose this quickly with proper testing equipment.

Thanks for sharing your experience. Mine turned out to be a similar problem with loose connections after HVAC work. The technician found the cabin air sensor was disconnected and the wiring to the blower motor was slightly pinched, causing intermittent operation. Just curious, do you remember roughly how much the repair cost in your case? Also, has your blower motor and air quality sensor system worked properly since the fix?

The repair was fairly straightforward and cost 95€ to fix the damaged cable connections. Since having the auto climate control system repaired, all components including the blower motor and cabin air sensor have worked flawlessly. The auto recirculation feature now responds correctly to air quality changes, and the HVAC sensor system maintains proper cabin temperature control. Looking back, it was definitely worth getting it properly diagnosed and fixed rather than trying temporary solutions. These delicate connections in the climate control system need careful handling during any HVAC work. When the plugs and wiring are correctly secured, these systems are actually quite reliable.

I went back to the shop last week and they found the issue quickly. The mechanic noticed the loose wiring behind the glove box where they worked previously. The air quality sensor was completely disconnected and a wire to the blower motor was pinched during the earlier repair. Total cost came to 120€ for fixing the connections and testing the HVAC system. The auto recirculation and blower motor are now working perfectly. The cabin stays at the right temperature and the sensor responds properly to air quality changes. Good thing I caught this early, the mechanic mentioned that damaged wiring could have caused bigger problems with the HVAC control module if left unfixed. Lesson learned about double-checking connections after any work in that area. Just wrapped up my 1000km checkup since the repair and everything is still running smoothly. Definitely worth getting it properly diagnosed rather than living with a broken climate system.