SM3 Blower Motor AUC Sensor Fault

I've got a 2009 Renault SM3 with a gasoline engine and almost 98k kilometers on the clock. The blower motor isn't working, and after scanning with the OBD reader, it's showing an AUC sensor fault. I've checked the fuses, and they're fine. Could a faulty air quality sensor really stop the blower motor from working? I suspect it might be a defective cable or plug connection.

4 comment(s)

Dude, I had a similar problem with my SM3! The climate control was acting up. Have you checked the wiring harness for the AUC sensor? Seems weird, but could be a short.

Thanks for the quick reply! Where exactly is the wiring harness located? And did your blower motor also stop working completely, or was it just acting erratically?

Yeah, the blower was dead as a doornail. The harness is a PITA to get to, it's near the sensor behind the glove box. Honestly, I'd take it to a workshop before you start ripping apart your dashboard. They'll diagnose it properly.

Appreciate the advice! Sounds like it's worth getting checked by a professional. I went to the workshop and they confirmed it was the AUC sensor cable. 95€ later and the blower is working again! Thanks!

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