Steppenaudi

No cold air on both sides of front cockpit. VCDS reports the following:

Address 08: Auto HVAC (J255) Labels: Redir Fail!
Part No SW: 8K1 820 043 AL HW: 8K1 820 043 AL
Component: KLIMA 3 ZONEN H04 0123
Revision: C3000000 Serial number: 01080320130871
Coding: 64C120C200
Shop #: WSC 06335 000 00000
VCID: 72EB36EDAD15B1DAD3-8026

2 Faults Found:
00457 - Control Module for Network (J519)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 231
Mileage: 76538 km
Time Indication: 0
Date: 2019.04.09
Time: 22:43:27

00256 - A/C Pressure/Temperature Sensor (G395)
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 231
Mileage: 76538 km
Time Indication: 0
Date: 2019.04.09
Time: 22:43:27

Freeze Frame:
Temperature: 9.0∞C


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 8K0-907-063.clb
Part No SW: 8K0 907 063 DJ HW: 8K0 907 063 DJ
Component: BCM1 1.0 H16 0103
Revision: 09016001 Serial number: 00000566263501
Coding: 26000091863CAFC00000480000003D0D0F1C4608E009022500 0008004000010200040034000000
Shop #: WSC 55826 001 1048576
VCID: 7AFB1ECDF565C99A9B-802E

1 Fault Found:
00256 - A/C Pressure/Temperature Sensor (G395)
014 - Defective
Freeze Frame:
Fault Status: 01101110
Fault Priority: 3
Fault Frequency: 1
Reset counter: 231
Mileage: 76538 km
Time Indication: 0
Date: 2019.04.09
Time: 22:43:35

Is the root fault the the A/C pressure sensor? That's what it looks like to me. I'll have to get it into a shop for a fix, but I'd appreciate a second + opinion.

HZ60

Could very well be. There were apparently a batch of bad sensors that year. They replaced mine before it crapped out on my 2013. TSB 87D9 – Replace AC Pressure/Temperature Switch

MurrayA4

Yes I agree that the "A/C Pressure/Temperature Sensor (G395)" is the likely culprit.They've been failing since the early 2000's.You'd think those Germans could have sorted out their supplier by now ! Fortunately they're inexpensive and easy to replace.Audi is smart enough to have a "one way" valve so you can remove the sensor without having to evacuate the Ac gas.

Steppenaudi

Thanks all for the responses. I’ve scheduled some shop time in two weeks for this, and I’ll pass on the TSB to the tech.

Redd

Murray-
"You'd think those Germans could have sorted out their supplier by now !"
What, you're trying to reinforce the stereotype of Great White North Hosers, who only sit around drinking beer between hockey games?

I think those Germans got it sorted out long ago, and are intentionally using the cheapest source of parts, knowing they WILL fail outside of the warranty period. Which is a good thing, excellent choice for them, since it generates service profits.

Fifty years down the line, and everyone is still playing catch-up to ACDelco. (G)
Although, Honda took some great steps up by 1985, but they still couldn't copy the patented crotch-blower vents borrowed from NASA research.

MurrayA4

Geez Redd don't be so sceptical.The Germans care about us.Best long term run I saw of inferior parts was Ford fuel pumps.Must have gone on 20 years.Many applications didn't provide an access port so the tank had to be dropped.
Our beer's still good but you Yanks have stolen hockey from us.Now I'm off to collect some maple syrup !

Redd

Skeptical? No no, I'm not skeptical. I'm certain that some outstanding German accountants have done their job: Boosting short-term profits.

Now, if you take a company like Benelli...I think they started as a family business literally a thousand years ago. Rumour is they are in it for the long run, not for this quarter's or even this year's profits.

Same as LLBean. The late chairman once said that even if they bend over backwards to fill the most ludicrous warranty claim...it is cheaper than the acquisition cost of a new customer. They way the lifetime (40+ years) profits from a customer against the cost of servicing that customer. Sadly, I understand some warranty/returns may be cut to one full year now, after too much simple abuse.

The free 50-cent replacement for my sunvisor clip was nice...but not quite in the "Aces" league.(G)