Hi everyone done a VCDS diagnostic and have some faults, see picture. Any ideas of rectifying ? Thanks

The air quality sensor is linked with the heating system in that signals from it can change the position of the heater flaps.  I would start there.  On most VAG cars it's found in the plenum chamber which is under the grille below the windscreen which is a damp place.  There is a chance that the the sensor itself or the wiring to it is corroded.  The stuck flap codes may or may not be part of the same issue but it's not a bad place to start.   It's bound to mean wipers/arms off to get access to it if you are feeling brave. 🙂     

Edited 23 October, 20241 yr by Rheumy

5 minutes ago, Rheumy said:

The air quality sensor is linked with the heating system in that signals from it can change the position of the heater flaps.  I would start there.  On most VAG cars it's found in the plenum chamber which is under the grille below the windscreen which is a damp place.  There is a chance that the the sensor itself or the wiring to it is corroded.  The stuck flap codes may or may not be part of the same issue but it's not a bad place to start.   It's bound to mean wipers/arms off to get access to it if you are feeling brave. 🙂     

Thanks for the info, I had my windscreen replaced a few days ago and I know they took the wipers and scuttle off but the date on the codes are last year so wouldn’t think Autoglass has broken anything. 

It's usually the damp environment under there that causes corrosion of the connector plug or the sensor itself.  The air quality sensor can switch the flaps to recirc if it senses poor air quality it shouldn't really be connected with the hot/cold flaps but you never know. 

 

There is usually a calibration with those heating systems which can be done with VCDS diagnostics.  It tells the system about the various flap positions so it can re-sync itself.  The motors can fail though so they may need replacing.  I think I would check/replace the air quality sensor then clear the codes and see which come back and whether they come back individually over time or both together since the codes are listed as 'intermittent'.     

Is the ventilation system working as it should?

 

Try this as well.

https://www.youtube.com/watch?v=MRa6c9UfyEs

1 minute ago, ords said:

Is the ventilation system working as it should?

 

Try this as well.

https://www.youtube.com/watch?v=MRa6c9UfyEs

Thanks I have tried that, not sure if it’s re calibrated anything. I think I will clear the fault codes and see what faults if any come back.

I've had the same air quality sensor fault since I got my car 4 years ago. Personally I don't think it's worth fixing, just another unnecessary gadget IMO.The alternative solution would be to press the recirc button. How hard is that?

Edited 24 October, 20241 yr by Gammyleg
Added last sentence.

Just now, Gammyleg said:

I've had the same air quality sensor fault since I got my car 4 years ago. Personally I don't think it's worth fixing, just another unnecessary gadget IMO.

Yes probably correct, I wasn’t even aware of anything till I done the scan 😂. 

2 hours ago, Keencyclist said:

 I think I will clear the fault codes and see what faults if any come back.

They're all shown as intermittent which means the faults weren't present when the scan was done but were historical.

Edited 24 October, 20241 yr by PetrolDave

I agree with Dave but that's the reason to clear them and see which comes back.  I wouldn't worry too much about any of them for now unless you are having other problems like not being able to select hot/cold reliably.