In case it helps anyone, this video helped me resolve my issue on a 2006 Audi A6. The symptoms were the fan speed was consant no matter what setting it was on and air conditioning did not work. Also the blower ran for about 20 secons after shutting the car off. The following codes were present in VCDS [Address 08 - Auto HVAC] 01858 - Air Outlet Sensor; Right Center (G348) 010 - Open or Short to Plus 00256 - A/C Pressure/Temperature Sensor (G395) 004 - No Signal/Communication 01844 - Control Module for Fresh Air Blower (J126) 004 - No Signal/Communication 01274 - Air Flow Flap Positioning Motor (V71) 003 - Mechanical Failure - Intermittent I am not sure all were related to the pressure sensor but the issues were resolved when I changed it as shown in this video.
Thank you for that bit of info. Did your rad fans kick in as soon as the engine was running. Mine is doing the same thing. Temp gauge sits just a quarter way from the bottom the only time it goes half way is when it's doing a regen.
I changed the sensor first & then found that the AC gas was low so I had it recharged & it has been working perfectly fine since, especially so during the remarkedly hot summer we've just had in the UK.
No, it is not for me after working with VAG cars for many years but for beginners is very straightforward, after watching a few youtube repair videos, this is a very comprehensive one, that is what I meant. Well done, chaps!!
Hello there, very helpful to see this video, I just wonder would that be possible to remove left headlight without removing bumper to unscrew this pressure sensor?, thanks in advance
Hi! I have the a6 c6 also, and I can't find an answer to my problem. The ac blows hot and cold, and switches randomly even when auto is not on. I hope it's just this switch, but I would like to get a second opinion. The refrigerant might have a leak, but the lines are still cool
Löse nur die Abdeckung wie in 0:43. Auf der rechten Seite direkt am kühler ist der Sensor verbaut. Eine Plastik Abdeckung die mit einer Schraube gesichert ist lösen, danach kommt man einfach mit einer Spitzzange an den Sensor und kann ihn lösen. Translate it 😊
My old sensor was broken the diafragma was faulty ( i think) losed pressure , but i didnt got faults on VCDS scanner. got a new sensor from autodoc RIDEX one , instaled and filled with airco gas , but unfortunate not working the new sensor , hooked on VCDS scanner got the fault : 00256 / A/C pressure/temperature sensor (G395) Lower limit exceeded. So my question is : did i got a faulty sensor from the AUTODOC?
I'm not sure if it's a sensor that is bad. This car in the video also had a problem with AC. Scanner was showing some trouble with the pressure, but when we replaced the sensor, if I remember it correctly, it also didn't help.
Replaced it on mine, no difference, no fault codes with vcds, Only 6,6 bar pressure. It kicks not in. the 2 fans spin at low speed, and then stops after a while. So maybe the compressor is just shot or the compressor clutch. I am not a AC guru, i do a lot DIY on my C6 3.0TDI but AC is difficult to work on.
Hello , i have audi a6 c5 2.7t ,, my econ button light dont close and climate is not working , can you guess what is the problem , is it commonly pressure sensor fault ?? Can u help me pls. thanks, Greetings from Turkiye .. tahnks bro
Hi. Audi a6 c6 4f5 , 2005, 2.0 tdi is my car and I need some help regarding ac system. Been trying to find the thermal expansion valve but I simply can not find it anywhere on the car. Do you know if it has one at all, and where is it? Ac don't work, I put new compressor, new pressure switch at condenser, new receiver, charged and still don't work. Internet info says there must be a txv at evaporator but I just don't see it. I will appreciate any thoughts. Thanks
Clever enough, I brought this car from 100k to 300k miles over 7 years (been to a mechanic only once for oil pump conversion) all because of your videos. Thanks a lot
My ac button sometimes does not turn on. Then if I turn the car off and on again, the ac button turns on again?? Just yesterday when I turned the car off, I heard a sort of hissing sound from the engine compartment?? Could this be this sensor??
It can't read AC pressure. That car had some trouble with AC not working. If I remember correctly, after we replaced that sensor, it still had a problem. I just decided to make a video for those who need to replace it, but don't know how.
In case it helps anyone, this video helped me resolve my issue on a 2006 Audi A6. The symptoms were the fan speed was consant no matter what setting it was on and air conditioning did not work. Also the blower ran for about 20 secons after shutting the car off.
The following codes were present in VCDS [Address 08 - Auto HVAC]
01858 - Air Outlet Sensor; Right Center (G348)
010 - Open or Short to Plus
00256 - A/C Pressure/Temperature Sensor (G395)
004 - No Signal/Communication
01844 - Control Module for Fresh Air Blower (J126)
004 - No Signal/Communication
01274 - Air Flow Flap Positioning Motor (V71)
003 - Mechanical Failure - Intermittent
I am not sure all were related to the pressure sensor but the issues were resolved when I changed it as shown in this video.
Thank you for that bit of info. Did your rad fans kick in as soon as the engine was running. Mine is doing the same thing. Temp gauge sits just a quarter way from the bottom the only time it goes half way is when it's doing a regen.
Could that be a thermostat issue?
I did this on my 2011 C6, pretty easy. Symptoms I had were no AC and a constantly blowing fan. A quick re charge & all is good and very very cold...
Glad if it helps 👍
Hi Graham.. when you say recharge did you just regas your ac? Or did you replace the said pressure sensor switch as shown in the video?
I changed the sensor first & then found that the AC gas was low so I had it recharged & it has been working perfectly fine since, especially so during the remarkedly hot summer we've just had in the UK.
My friend if I have to replace and it,can I go straight or gota need tools to remove the ac gas?
You need a Air Con specialist to safely remove the refrigerant in your system. It requires the correct tools to vacuum it out of the system.
Thanks to you I now have working ac 👌👌
Cool ❄️ You're welcome 👍
Thank you for making it so easy to understand!!
Not a rocket science 😉
You're very welcome 👍
No, it is not for me after working with VAG cars for many years but for beginners is very straightforward, after watching a few youtube repair videos, this is a very comprehensive one, that is what I meant. Well done, chaps!!
Thank you and Greetings from Germany
Welcome!
Thank you from France and Belgium !
You're welcome! I have just driven back from Latvia through Belgium and France to channel tunnel 😎
Thanks to you i fixed it.
You're welcome 👍
Hi Thanks for the very comprehensive video. What is the symptoms that leads to the change of AC sensor?
AC not working, scan gives an error for faulty AC pressure sensor.
thanks for your response! Eager to see more videos from you :)
I'll try my best 😊
Hello there, very helpful to see this video, I just wonder would that be possible to remove left headlight without removing bumper to unscrew this pressure sensor?, thanks in advance
No, not really - all fixings for headlight sit behind the bumper.
Hello, in order to replace the sensor, I need to use tools to remove the gas or just remove the sensor bolt slowly?
Thank you so very much!
Thanks. Very helpful
You're welcome
Hi! I have the a6 c6 also, and I can't find an answer to my problem. The ac blows hot and cold, and switches randomly even when auto is not on. I hope it's just this switch, but I would like to get a second opinion. The refrigerant might have a leak, but the lines are still cool
Maybe heating valves sticking:
th-cam.com/video/r2fW_XCAu1I/w-d-xo.html
Thanks for a great job👍
You're welcome 😎
Hi. You can change pressure sensor without taking front bumper. I did change mine without taking bumper off.
Thanks 👍 Good to know. Maybe make a video?
How did you do it?? Seems impossible
Hello ! Please tell us how you changed it without removing the bumper
Today i have changed the pressure sensor without remove the bumper... Super easy ... But climatronic still not work..
I need to replace minds but don't want to remove the bumper. So how did you do that?
Löse nur die Abdeckung wie in 0:43. Auf der rechten Seite direkt am kühler ist der Sensor verbaut. Eine Plastik Abdeckung die mit einer Schraube gesichert ist lösen, danach kommt man einfach mit einer Spitzzange an den Sensor und kann ihn lösen. Translate it 😊
@DZ-cc2fq Can you translate that for me please thanks again 🙂
Where to get gasket ring you said needs to be replaced?
If you mean O-ring, then any VW parts shop, dealership, or sometimes O-rings are sold in sets.
My old sensor was broken the diafragma was faulty ( i think) losed pressure , but i didnt got faults on VCDS scanner.
got a new sensor from autodoc RIDEX one , instaled and filled with airco gas , but unfortunate not working the new sensor , hooked on VCDS scanner got the fault : 00256 / A/C pressure/temperature sensor (G395)
Lower limit exceeded.
So my question is : did i got a faulty sensor from the AUTODOC?
I'm not sure if it's a sensor that is bad. This car in the video also had a problem with AC. Scanner was showing some trouble with the pressure, but when we replaced the sensor, if I remember it correctly, it also didn't help.
Thnx , i wil update you .... when i solve , if i solve 😂
@@MALOMIXI1did you solve it?
Replaced it on mine, no difference, no fault codes with vcds, Only 6,6 bar pressure. It kicks not in.
the 2 fans spin at low speed, and then stops after a while. So maybe the compressor is just shot or the compressor clutch. I am not a AC guru, i do a lot DIY on my C6 3.0TDI but AC is difficult to work on.
I'm not AC guru either, in my experience if anything wrong with AC in majority of cases it was compressors fault..
Thanks for the video and information I have vw passat 2004 where is the AC pressure switch location same as Audi A6
Sorry Adnan, I don't know
Hello , i have audi a6 c5 2.7t ,, my econ button light dont close and climate is not working , can you guess what is the problem , is it commonly pressure sensor fault ?? Can u help me pls. thanks, Greetings from Turkiye .. tahnks bro
Hello, probably it's pressure, maybe pressure sensor - AC recharge service should be able to test it. I can only guess, sorry.
@@wawayltd i will change the pressure sensor , thanks for answer bro
Hope it helps. Make sure there is actually pressure in the system.
Hi my a6 c6 avant engine fan is constantly on whether its cold or warm, 100% of the time its on. Would switching this sensor fix my problem?
AC pressure has nothing to do with engine fan. However, I don't know what to say about the engine fan. I know it has life of it's own.
What torque should the AC pressure sensor be tightened to?
I don't know the torque, sorry, I've lost my Audi documentation. Not too tight, same as almost any other sensor.
Hi. Audi a6 c6 4f5 , 2005, 2.0 tdi is my car and I need some help regarding ac system. Been trying to find the thermal expansion valve but I simply can not find it anywhere on the car. Do you know if it has one at all, and where is it? Ac don't work, I put new compressor, new pressure switch at condenser, new receiver, charged and still don't work. Internet info says there must be a txv at evaporator but I just don't see it. I will appreciate any thoughts. Thanks
I'm not as clever as I may look in my videos, but I can recommend this source:
erwin.audi.com/erwin/showHome.do
Clever enough, I brought this car from 100k to 300k miles over 7 years (been to a mechanic only once for oil pump conversion) all because of your videos. Thanks a lot
You're welcome 👍
Where is the thermostat located on this engine? Is it easy to get to?
Sorry, I can't help you at the moment. I can recommend this :
erwin.audi.com/erwin/showHome.do
My ac button sometimes does not turn on.
Then if I turn the car off and on again, the ac button turns on again??
Just yesterday when I turned the car off, I heard a sort of hissing sound from the engine compartment??
Could this be this sensor??
I think it needs to be checked for gas leak.
@@wawayltd ok, thanks. Will check out for gas leaks.
My air con button just flashes once and turns off when I press the button , any ideas?
I would try to check gas pressure.
Is the sensor in the same location of the S6 v10?
I don't know, sorry. I've lost my Audi manuals.
@@wawayltd Thanks
How do I wire through the door seal what parts do I need to remove in the dash plz help I need it for tmro
Sorry, I have never removed the dash in this car. I don't have any relevant info at the moment.
@@wawayltd okay thank you.
Is it the same for the c7 a6?
I don't know about C7, sorry
Whats the symptom with broken pressure sensor?
It can't read AC pressure. That car had some trouble with AC not working. If I remember correctly, after we replaced that sensor, it still had a problem. I just decided to make a video for those who need to replace it, but don't know how.
Great timing. Mine has just been re gassed which didn’t work so hoping it’s the switch. I’ll try this next week. Will any new switch work?
I hope it helps, but try not to go for cheapest - apparently they don't last.
So you’re driving an A6 again?
No. That belongs to my friend's wife.
He drives a Flying Spur you dippsh
I did this but had b10a929 come up
Probably, there's a problem with wiring or connector.