Giulietta's Multiple Failures Traced to Temperature Sensor

After experiencing similar sensor diagnostics issues on my 2016 Alfa Romeo Stelvio diesel, the root cause was a faulty vehicle temperature sensor with damaged wiring connections. The symptoms matched, climate control malfunctions, frozen washer nozzles, and non-functioning mirror heaters. The temperature sensor replacement alone did not resolve the problem. The main issue was corrosion in the wiring harness connecting the outside temperature sensor to the control module. The connector pins had significant damage requiring a complete harness replacement along with the sensor. This turned out to be a serious electrical system concern that could have led to more extensive damage if left unaddressed. The repair involved: 1. Full diagnostic scan to confirm the sensor malfunction 2. Complete replacement of the sensor wiring harness 3. Installation of new outside temperature sensor 4. System recalibration 5. Multiple test cycles to verify all functions For your Giulietta, requesting a thorough inspection of the entire sensor circuit would be advisable, not just the sensor itself. The issue typically requires specialized diagnostic equipment to properly identify all affected components.

Thanks for sharing your experience. Similar symptoms cleared up on my Giulietta after addressing the car temperature sensor system. My repair required both sensor replacement and wiring fixes. Good point about the harness corrosion, this was key to solving it completely. The sensor diagnostics revealed multiple connection points needed attention, not just the sensor itself. Getting the system properly calibrated after parts replacement was essential for reliable temperature readings. Could you share what the final repair cost was in your case? Also curious if youve had any recurring issues since the fix? My vehicle temperature gauge has been working flawlessly after the repair, but always good to know what to watch for long-term.

Thanks for asking about the repair costs. The temperature sensor issue on my Stelvio was fully resolved with a basic fix to the cable connections, which came to 95 Euro. The mechanic found the outside temperature sensor itself was actually fine, the malfunction was due to a damaged plug connection that needed cleaning and reseating. Since having this repaired, the temperature monitoring system has worked perfectly with no recurring issues. All the original problems, climate control, washer nozzles, mirror heating, are now functioning as they should. The sensor calibration process after the repair was straightforward since no major components needed replacement. For ongoing maintenance, the mechanic suggested keeping an eye on the sensor readings during extreme weather changes, as this can help catch any future connection issues early. But honestly, since the faulty connection was fixed, the system has been completely reliable with accurate temperature readings.

I finally got everything sorted with my Giulietta last month. Went to a new specialist who actually took time to properly diagnose the car temperature sensor system. Total cost ended up at 320 Euro, more than expected but worth it for a proper fix. The repair involved replacing the main temperature sensor, fixing corroded wiring, and a complete sensor calibration. The vehicle temperature gauge now shows accurate readings and all the connected systems work perfectly. The AC runs smoothly, washer nozzles spray without freezing, and the mirror heating is back to normal. The temperature monitoring has been stable since the fix, with no error codes appearing. Really glad I switched mechanics, the new one spotted issues the previous one missed, especially with the wiring harness connections. The thorough sensor diagnostics made all the difference in getting everything working properly again. The whole repair took about 4 hours, but fixing it right the first time saved me from ongoing issues. No problems since then, even during recent cold weather.