mila_phoenix75
XC90 Automatic Temperature Control Issue
Summary of the thread
The automatic temperature control in a 2018 Volvo XC90 stopped working, with an error stored and the AC not switching on. The issue was suspected to be related to a faulty temperature sensor or a bad cable connection. It was advised to check the sensor's wiring harness and connector for damage or loose connections. Ultimately, a local shop diagnosed and resolved the problem by replacing the faulty interior temperature sensor and fixing the wiring, restoring the system's functionality.
Did this summary help you solve your problem?
4 comment(s)
mila_phoenix75 (community.author)
Thanks! I haven't checked with a multimeter yet. Could you elaborate on which specific pins I should test for continuity? Also, where is the interior temperature sensor located in the XC90?
neleschulze38
Without proper diagnostic tools, attempting to test the sensor yourself could cause further damage. Based on the error code and symptoms, a defective sensor is highly probable. I recommend taking your Volvo to a qualified workshop for a proper diagnosis and repair. They will have the necessary tools and expertise.
mila_phoenix75 (community.author)
Understood, I appreciate the advice. I took it to a local shop, and you were right - it was a faulty interior temperature sensor and a bad connection. They replaced the sensor and fixed the wiring. The total cost was 95€. Everything's working perfectly now!
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
VOLVO
community_crosslink_rmh_model
XC90
neleschulze38
The symptoms you've described certainly point towards a problem with the interior temperature sensor. Have you checked the sensor's wiring harness and connector for any visible damage or loose connections? Are you familiar with using a multimeter to check for continuity?