Outside Temperature sensor gone mad!?

[Trcek]

Hi all, I’ve just completed an oil and filter change on my 2013 focus 1.6 tdci (titanium). All went as normal but on starting the car the outside temperature sensor has constantly read -40. Ran it for around 6-10 mins to see if it adjusted.

I've tried removing a number of fuses, the block connector to the passenger mirror and lastly the positive battery connection in an effort to reset it. 

none have worked so looking for a tip/advice

many thanks

Matt

[Stenliivanov]

6 hours ago, Trcek said:

Hi all, I’ve just completed an oil and filter change on my 2013 focus 1.6 tdci (titanium). All went as normal but on starting the car the outside temperature sensor has constantly read -40. Ran it for around 6-10 mins to see if it adjusted.

I've tried removing a number of fuses, the block connector to the passenger mirror and lastly the positive battery connection in an effort to reset it. 

none have worked so looking for a tip/advice

many thanks

Matt

Hi Mat, 

Don't worry about it. It happened to me as well. It was again after an oil and filter change. I though that I had unplugged or broken some sensor or cable but after a short run the reading was absolutely fine. Some months after I decided to check my ECU for DTC and then I found out that a DTC have been stored probably back then. 

I'm sure that it will be fine. 

BR

[iantt]

The outside temp sensor is located in the n/s door mirror so I can't see there is a link with oil and filter change . 

[TomsFocus]

You've probably knocked the plug out for either the engine temp sensor or the MAF sensor.  Both of these make the outside temp default to -40...  I have no idea why but they do!

[Paulafocus2012]

My temperature is playing up the reading is saying 3 degrees it tends to go down again can this be fixed 

[Ferdinand]

On 08/01/2019 at 1:51 PM, Trcek said:

Hi all, I’ve just completed an oil and filter change on my 2013 focus 1.6 tdci (titanium). All went as normal but on starting the car the outside temperature sensor has constantly read -40. Ran it for around 6-10 mins to see if it adjusted.

I've tried removing a number of fuses, the block connector to the passenger mirror and lastly the positive battery connection in an effort to reset it. 

none have worked so looking for a tip/advice

many thanks

Matt

Hi,

Did you get a solution for this. Mine has just done the same after an oil and filter change

Ferdinand

[oopsitsbrokenagain]

Hi, 

Mine has been acting up lately too - it's reading about 6-15°C higher than the actual temperature outside, but very occasionally works correctly. 

 

Any ideas on what the issue might be or how best to fix this issue? 

 

Thanks

[antward91]

21 hours ago, Ferdinand said:

Hi,

Did you get a solution for this. Mine has just done the same after an oil and filter change

Ferdinand

Had my car serviced new years eve and had the same problem.

I ended up driving for around 20/30 mins and it rectified itself slowly as I drove