Ambient temp sensor reading -40 Degrees C

[Steve16v 0]

Small problem but it has been niggling at me.

 

The ambient temp reading on the MFA has been reading -40 Degrees C on the car since I got it. From reading other posts if the sensor is knackered or disconnected the Temp display should be bypassed when cycling through the displays on the MFA. I checked the sensor (I presume it is a thermistor) there on the weekend and its resistance changes when I blow hot air across it... so that would indicate to me that it is working.

 

Am I looking at a short or a dodgy earth? Has this happened to anyone else?

 

Cheers :)

[Dec 1]

This problem of Steves has been niggling at me too! Seen as he has forever being trying to steal the temp sensors out of my cars!! :lol:

 

Thank god ye finally got around to checking yours Steve!

[Steve16v 0]

I came across a post where another guy was having the same problem but there was nothing in the thread about a solution.

 

Any ideas?

[paul20v 0]

steve16v

your avatare is showing a back lit newer style vdo guage but in green how did you do that they are normally red

sorry for going off thread was curious thanks paul

[Steve16v 0]

@ paul20v PM sent

 

Bump... any members come across this sensor reading before and have any suggestions to what may be at fault?

[The_Dude 0]

Have you checked all the wiring after the temp sensor? I guess getting out the multimeter and checking everything should be your first step?