jeffkruse

I periodically get this error code in the Level Control Module(34)
1 Fault Found:
01772 - Signal from Level Control Pressure Sensor (G291)
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 5
Reset counter: 176
Mileage: 219517 km
Time Indication: 0
Date: 2016.07.20
Time: 15:14:5

I would like to get rid of the error, plus fix the issue if I can. I get no other codes in that module and the car seems to be at the correct level on all sides(no sagging). But I travel a lot with this car and I do not want it to go out when I am out of town. Plus I do not want to ruin anything else. My question is can I run any tests with my VAGCOM to tell me why this code displays. The only other thing I can tell you is that it SEEMS the lift mode takes forever. Should I rebuild the compressor(I cannot remember the guys name that sells the kit) or replace the Solenoid Valve Block where the sensor(G291) lives. Any help would be appreciated. Thanks

richard-tx

I would start with a compressor rebuild. A new ring will likely reduce the run time of the compressor.

MainelyA8

I had this, and ended up having to replace the valve block. I had a thread started on it from awhile ago, but from what I was told by other members here, it's very rarely the valve block that goes bad. I just got lucky!

mishar

Check the sensor contacts first. Apply some contact spray. VCDS measure the air pressure . It should be close to 16 bar. If it is much lower try to rebuild, or a new compressor.

jeffkruse

First of all thanks for the replies, To check the air pressure, do I go to adaption and which channel etc... I have been researching this site as well as others and am a member of Alldata and cannot find how to test the Level Control module. Is there a document/post somewhere that will help

mishar

As far as I remember you go to Measuring Blocks and find it.

I don't think there is way to check Valve Block further than pressure sensor.

storka

Yes it's there.
Just scroll up the Chanel's not sure maybe 005

jeffkruse

10.74 bar. Is that too low and indicate rebuild compressor or replace valve block?

richard-tx

10.7 bar is 155 PSI. If I recall that is almost too much. I could be wrong.

A worn compressor ring means that the compressor will take a long time to reach operating pressure. In extreme cases it will never reach proper pressure.

jeffkruse

Value Block?