Subaru R2 HVAC & Sensor Repairs Cost Guide

I experienced similar symptoms on a Subaru Justy 2005 with the HVAC system. The fault detection process revealed multiple issues with the temperature sensor connections. The main problem was traced to corroded wiring harness connectors leading to the daylight sensor and climate control unit. The repair involved: Testing all automotive sensor connections, Replacing damaged wire connectors, Sensor calibration for the entire HVAC system, Cleaning oxidation from connector pins, Verifying proper communication between modules This was a serious issue since faulty readings from temperature sensors can cause the heating system to malfunction completely. The repair required specialized diagnostic equipment to properly calibrate the sensors after fixing the connections. The symptoms matched exactly, inconsistent temperature control, stored error codes, and poor heating performance. The key is having a shop with proper sensor calibration equipment, as generic scanners often miss communication issues between the HVAC components. Would recommend getting this checked soon, as continued operation with faulty sensors can lead to additional component failures in the climate control system.

Thanks for the detailed reply. My case sounds identical, especially with the sunlight sensor issues and error codes. Getting it fixed next week since the heating problems are getting worse. Just checking, what was your total repair cost? Also wondering if you had any other sensor faults pop up since getting it fixed? My mechanic mentioned the fault detection might reveal more issues once they dig deeper.

Just wanted to update, got the repair done last month and it completely resolved the solar sensor fault and HVAC issues. The fault detection process pinpointed the problem to a damaged cable connection at the sunlight sensor, which was causing incorrect temperature readings. The total repair came to 95€, which covered fixing the connection and testing the system. Much cheaper than expected, especially since no parts needed replacement. The daylight sensor now works perfectly and the heating responds correctly to temperature changes. No other sensor faults have appeared since the repair. The key was having a proper diagnostic system that could identify the exact connection problem. The car sensor network is now functioning as intended and the climate control remains consistent. Makes sense to let your mechanic do a thorough check though, while my issue was straightforward, these automotive sensor problems can sometimes be connected to other components in the system.

Following up on my repair experience, I took it to the shop last Tuesday and the diagnostic revealed exactly what you mentioned. The car sensor system had multiple connection issues, mainly with the wiring to the temperature sensor. The total repair came to 320€, which included a complete sensor calibration and replacement of corroded connectors. The daylight sensor needed cleaning but was otherwise functional. The mechanic found the main problem was moisture damage to the HVAC control module wiring. After the repair, the heating works perfectly and maintains consistent temperature. No other sensor faults have appeared in the two weeks since fixing it. The solar sensor now correctly adjusts the climate control based on sunlight conditions. Really glad I got it checked when I did, the mechanic mentioned waiting longer could have caused more extensive damage to the HVAC system. The fault detection process was thorough and they showed me all the problematic connections before starting repairs.