Matic__96

Hey guys I need a bit of help. Display is showing outside temperature of 34°C, but outside is around 0, changed my the sensor in the bumper it still shows the same temp. When I disconnect the sensor and start the car temperature starts goimd dowm to 19.5 and stops there. Everything was normal and few weeks back I went to mountains where is a lot of snow, when I headed back home heating was not working good, and it was showing outside temo of 14°, but it was - 5. Few days after that it went back to normal than went again to snowy area and same thing, few day after again normal and one more time snow it went up to 34 and ita still shiwing 34 week later. Anyone has any solution?