BMW F15 air conditioner can not work,and the dashboard show temperature 50+℃,high frequency of non-cooling working.
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Trouble Code:
P110F: Ambient Air Temperature Sensor Faulty CAN Signal
Possible Causes:
Faulty Ambient Air Temperature Sensor
Ambient Air Temperature Sensor harness is open or shorted
Ambient Air Temperature Sensor circuit poor electrical connection
Diagnostics and analysis:
1 Use multimeter to measure related wire diagram,work!
2 Disconnect dashboard connector to measure resistance 3.5K,it is normal
3 Both 1 and 2 measurement indicate the dashboard is damaged can not work well
Solution:
1 Remove dashboard,and check PCB
2 There are two places corroded by water
3 Resolder the places that corroded
Solved!
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