[Engineer521]

Hi all.
Hope someone can point me in the right direction,
When the temperature is above 18'C and starting from 'cold' my 2012 Altitude idles very rough
for about 20 seconds then clears and runs perfect. When the temperature is below 18 there is no problem. It sounds like there is a sensor that has gone out of its range. Any ideas ?

 

[Engineer521]

Hi all.
Hope someone can point me in the right direction,
When the temperature is above 18'C and starting from 'cold' my 2012 Altitude idles very rough
for about 20 seconds then clears and runs perfect. When the temperature is below 18 there is no problem. It sounds like there is a sensor that has gone out of its range. Any ideas ?

 

[Engineer521]

Well that's two VW forums that can't suggest anything.

 

[Engineer521]

Does anyone know the whereabouts of the ambient air temperature sensor

 

[nickyt]

You need to get a VCDS scan and post it here. It is really impossible to troubleshoot these problems without the scan.

The scan will tell you what error codes are present. You can also use it to log the various sensors.

You want to know what the ambient air temp sensor is reporting? You can track it in real time.

 

[volkswagens-for-life]

Agreed a scan is 100% needed