Another Climate control problem

[fulcrum111]

I've recently started having problems with the climate control "ECON" button in my A4 B6 1.9tdi. The ECON cannot be turned off. I push the button, the light goes out, then I release the button and the light comes back on again. I have been switching between no ECON and ECON regularly so I don't think there's a problem due to lack of use. I read on a older thread here that with ECON turned off and the Outside Air Temp is less than 5 degrees C an auxillary heater comes on - I've been using this on these cold morning and it works really well - I miss it now that its not functioning.

Anyone got any ideas? I'll be running vagcom on it this weekend so I'll see if there are any faults. Will post back if there is.

Thanks!

[benjie]

I seem to remember that ECON stays on when the air con needs re-gassing? Could be wrong though.

[scooby_d0o]

No, your right it does stay on when gas is need

[fulcrum111]

Re-gassing sounds like it will be an expensive trip to my local Audi dealership? Are there any options to going to an Audi Dealership? Is this something that anyone has tried themselves?

[benjie]

Go to any air con specialist and they'll do it. It's not a big thing. They should also do a pressure test thing for you to make sure there's no leaks. Will probably be cheaper now than in summer as there's far less demand for their work.

[fulcrum111]

Thanks for yous assistance Guys.

Any Irish members out there know of any decent air con specialists in the Dublin / Midlands region? Or anywhere on this island for that matter?

[Boy]

I had this problem two weeks ago on my A4 1.9 Tdi.
I took it to my local air con chap who checked and found a sensor needed to be replaced. It did not need a regas. The sensor was about £70 I think and there was a couple of hours labour but it all works now.
Good luck.;)

[scooby_d0o]

Vag it 1st to be sure, like boy said it could have a sensor fault, most likly needs a re-gas though. re-gas should ba about 40-50quid - make sure they don't just refill the system, you want a pressure test doing to make sure you have no leaks. you can buy a regas kit on ebay for about £15, but unless your 100% you have no leak then its a bit wasted, also wouldnt do this unless you know a bit about refrigeration - you could over fill the system.

[fulcrum111]

Thanks Guys. I'll vagcom it and see what it says. Won't re-gas it myself as I've no experience whatsoever with refrigeration units. Plus I'd like to get the leak check carried out as well. I'll post my findings!

[briano95]

I have the same problem in my Audi A4. I tried the self re-gas but all was ok. These refil bottles come with a guage and it read 'full' To make sure, I emptyed the gas and refilled to correct level but to no avail.

Will be waiting to hear your findings on the fault reader.

[fulcrum111]

Update on my climate control problem. I ran vagcom last night, I got the following fault under controller 08 - Auto HVAC:
00819 High Pressure Sensor (G65)
30-10 Open of short to Plus - Intermittent.

Can someone check the Ross Tech Wiki for me and see what it says for fault 00819 - I don't have access here in work.

If this is related to my problem with the ECON light it would make sense because sometimes the ECON is working and sometimes it isn't. Anyone know where the High Pressure Sensor (G65) is located and what its PN is?

Cheers.

[kite]

From the wiki


00819 - High Pressure Sensor (G65)
00819 - High Pressure Sensor (G65): Open or Short to Ground
Possible Causes
Wiring/Connectors from/to High Pressure Sensor (G65) faulty
High Pressure Sensor (G65) faulty
Possible Solutions
Check Wiring/Connectors from/to High Pressure Sensor (G65)
Check High Pressure Sensor (G65)



00819 - High Pressure Sensor (G65): Signal too Low
Possible Symptoms
Climate Control stuck in ECON Mode
Possible Causes
Insufficient Refrigerant Pressure
Wiring/Connectors from/to High Pressure Sensor (G65) faulty
High Pressure Sensor (G65) faulty
Possible Solutions
Check Refrigerant Pressure
Check Measuring Value Blocks (MVB)
Check Wiring/Connectors from/to High Pressure Sensor (G65)
Check High Pressure Sensor (G65)

[fulcrum111]

Thanks Kite.

Anyone know where the High Pressure Sensor (G65) is located?

[fulcrum111]

I've found PN 8A0 820 855 AA which is described as valve/high pressure switch/safety switch in the heater section. Could this be what I need?

[fulcrum111]

Anyone know where the High Pressure Sensor (G65) is located?

[MATTYBOY C]

Mine has just had the same problem,it will probly be the high pressure sensor, vag com will throw up g65 high pressure sensor short to ground or something along those lines, the sensoe was £38.00+vat from tps, it simply screws out without any loss of gas.
Hope this helps

[fulcrum111]

MattyBoy C, thats the fault I'm getting. Where is the sensor located? Is it in the engine bay somewhere? And can you tell me the PN of the sensor that you bought? Thanks.

[MATTYBOY C]

Hi, the sensor is located in the side of the condenser just to the side of the n/s headlight, it is easier to remove the headlight then it simply screws in with a 17mm spanner, the part number is:
8E0 959 126 C, also have a look here


I have checked the service manual with regard to servicing G65 and it indicates that this does not interfer with the refrigerant circuit.

the A/C Servicing notes are as follows:

http://www.capav.com/Audi/Misc/AC%20Servicing%20-%20Note1.jpg

And then the Component Overview is as follows - see that Component G65 Item 7 below has the superscript "1)" against it as highlighted above.

http://www.capav.com/Audi/Misc/AC%20Component%20Overview.jpg

Use this information at your own peril thou!
http://www.audi-sport.net/vb/images/smilies/readit.gif

Last edited by Woorlord; January 27th, 2010 at 19:04.

2001(51) A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE

[fulcrum111]

Cheers MattyBoy! :beerchug: