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Faulty Citroen relay ambient temperature misreading


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Hi there


My ambient temperature reading is very high. It's not the incorrect unit of measurement before anyone asks. It's definitely in Celsius. My local garage fitted a new one and the temperature range seemed even higher. They said it was the ecu that was probably playing up. I've read on some fiat car forums it could be worth checking the connection between the car and door as a dirty connection could cause misreading. I know my temperature sensor was soldered in as I saw the old one they took out. Any ideas for anything I could check or clean ?

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