AC Pressure sensor help
It was so hot in DC today that I decided to turn on my AC for the first time in several months. I soon found out that no cold air was coming form the vents. Ran diagnostics and got the following code:
Address 08: Auto HVAC Labels: 4F0-910-043.lbl Part No SW: 4F0 910 043 A HW: 4F1 820 043 AG Component: KLIMABETAETIGUNGH30 0020 Revision: 00000053 Serial number: 00000030288631 Coding: 0524326 Shop #: WSC 02325 758 00200 VCID: 1C3DA5D4DFB0D8E 1 Fault Found: 00256 - A/C Pressure/Temperature Sensor (G395) 002 - Lower Limit Exceeded - Intermittent Freeze Frame: Fault Status: 00100010 Fault Priority: 3 Fault Frequency: 20 Reset counter: 76 Mileage: 100744 km Time Indication: 0 Date: 2013.01.30 Time: 21:10:40 Before I order, could anyone confirm that this is the right sensor: http://genuineaudiparts.com/parts/20...SSURE%20SENSOR or may be a way to get the old sensor working? Thanks in advance. |
It looks like that's it, but sent Bill an email. Have you try cleaning the sensor connection?
Also something new I learn a few weeks ago. An A/C tech told to run the A/C for 30 sec to 1 minute at least once a week. So the freon could flow there the system and also the oil could lubricate the bearing in the compressor and valves. That's to avoid a/c break down that could run you up 1k for stuck bearing valve. Yes even in the winter weather. Also for those of you that recharge your own vehicles, he doesn't recommend the freon with the leak seal additive. Additive costs more problems in the long run. But if you go on road trip in extreme heat and the a/c stop cooling, to go for it. Just make sure you have your system check once your back home. Nice ride, you should white vinyl wrap the bumper markers. |
Originally Posted by eazy211187
(Post 24430231)
It looks like that's it, but sent Bill an email. Have you try cleaning the sensor connection?
Also something new I learn a few weeks ago. An A/C tech told to run the A/C for 30 sec to 1 minute at least once a week. So the freon could flow there the system and also the oil could lubricate the bearing in the compressor and valves. That's to avoid a/c break down that could run you up 1k for stuck bearing valve. Yes even in the winter weather. Also for those of you that recharge your own vehicles, he doesn't recommend the freon with the leak seal additive. Additive costs more problems in the long run. But if you go on road trip in extreme heat and the a/c stop cooling, to go for it. Just make sure you have your system check once your back home. Nice ride, you should white vinyl wrap the bumper markers. Could you provide me with any info on where to find the sensor or how to replace it? Also, if I was to replace it, will I lose the freon and will have to re-fill the AC again? Thanks |
Originally Posted by audia6s
(Post 24430696)
Eazy,
Could you provide me with any info on where to find the sensor or how to replace it? Also, if I was to replace it, will I lose the freon and will have to re-fill the AC again? Thanks Here's a link the where the sensor at. Just zoom in in the image. The sensor is #5 but you should also get round seal #3 and valve safety switch #4. But that up to you. http://www.jimellisaudiparts.com/sho...ssembly=746720 As for the freon, I won't be able to tell you. But if you have everything prep just swap them fast. You should good. Just in case you could away buy a bottle of freon R134A. |
If you remove the pressure sensor and all the pressure leaves the system then you must vacuum the system before adding Freon.
|
1 Attachment(s)
Thanks for help guys. So after digging through OnDemand5, I found that the Audi is aware of my issue have issued TSB as of 2010 (attached). I have never done AC work so these past few days, I am trying to educate myself before I start on this DYI. I was quoted $320 for this job so I rather do it myself. I also want to flush the refrigerant, but little confused on the process. From my understanding, I need to drain old freon out, vacuum the system to ~27mmHg, then add new freon. I am pretty comfortable with step 2 and 3 (after some research). The only thing I don't understand is how to, and what is the process, to get the old freon out for proper disposal. Any thoughts?
|
So the sensor came in today. Got the instructions on how to take front bumper off, get to the sensor. Can anyone suggest what should be done with freon prior? Do I need to drain it before taking the sensor off? i don't want something to blow up in my face:)
|
you should take it to a shop so they can capture the gas
|
So what you saying is I need to pump the freon out first before replacing the sensor and then to refill the AC again?
|
Originally Posted by audia6s
(Post 24438789)
So what you saying is I need to pump the freon out first before replacing the sensor and then to refill the AC again?
Unless you have a vacuum pump and the pressure gauges I recommend taking it someplace to have the work done. If it were me I'd pay the 325.00 and be done with it. By the time you buy R134a, the gauges, and getting a vacuum pump you will be almost there in cost. Not worth it for a onetime job IMHO. |
All times are GMT -8. The time now is 10:07 AM. |
© 2024 MH Sub I, LLC dba Internet Brands