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Level control sensor and compressor

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Old Aug 19, 2025 | 12:40 PM
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laff66
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Default Level control sensor and compressor

Getting the red Chassis System Failure msg on a 2020 Cayenne Turbo that is becoming much more frequent. I've searched like crazy and am not finding much info on the codes I'm getting. One is C104807, "Vehicle Level Sensor Mechanical Fault." I do see a few posts about this one, but not on any current gen vehicles. I'm assuming its still the same repair, but wondering if anyone knows how to diagnose which sensor? Also can't find much info on recalibrating. I have a Launch X431, but no idea if that would be capable of the process.

The other is C126016, "Compressor Electronics For Level Control, Voltage too Low." I cannot find this code anywhere on the internet. Very strange. I've got an appt to take it in on Thurs but figured I'd ask here to see if anyone else has experienced the same codes together. I'm sure one caused the other, just not sure in which order. The compressor sure sounds a lot more expensive than the sensor!

Any insight greatly appreciated.
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Old Aug 22, 2025 | 01:01 AM
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Do you hear the compressor run on more lately ?
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Old Aug 22, 2025 | 01:38 AM
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Originally Posted by Willy07
Do you hear the compressor run on more lately ?
I’ve never noticed hearing it run before, but not hearing anything out of the ordinary while getting the fault message.

Last edited by laff66; Aug 22, 2025 at 01:41 AM.
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Old Sep 16, 2025 | 06:17 AM
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Hi,

Did you get any solution from your workshop?

Im having this code too and did not find any solutions anywhere. The vehicle drives fine and does not seem to be causing any issue.

For some background
I have replaced the following parts due to wear and tear
2 X Front Air Suspension
1 X Rear Air Suspension balloon
Converted Lithium battery to 12v battery
Replaced Air compression with Valve block.

I did some research and it seems to point towards being a Relay issue. I have yet to get this sorted out. If anyone have any suggestion or feedback pls do share!
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Old Sep 16, 2025 | 07:53 AM
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From: linker Fahrbahn
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Compressor voltage too low is common.

I chalk it up to (for example) sitting in the car listening to music with the engine turned off (voltage too low) or main battery needing replacement. MY2020 cars have batteries approaching 7 calendar years old now. Time to replace.
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Old Sep 16, 2025 | 08:59 AM
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The funny issue is I did not get this code previously until I changed to a new compressor. My battery is also new so it seems abit werid that this code is popping up.

Not sure if its a cause for concern but will monitor.
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Old Sep 16, 2025 | 10:18 AM
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From: linker Fahrbahn
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Read codes and report back.
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Old Sep 16, 2025 | 11:29 AM
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The shop couldn’t get it to throw the code after driving it several times. I picked it up and it did it leaving their driveway, of course. Took it back, they checked and cleared the code and said to bring it back in a few days. That was a few weeks ago, and we haven’t had a chance to get it back in, but has not happened since. I’m sure it will though…
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Old Sep 16, 2025 | 12:22 PM
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From: linker Fahrbahn
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They cleared the code….


What was the code they cleared?
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Old Sep 16, 2025 | 12:27 PM
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Oh sorry about that - same two listed in the original post:
C104807 (Vehicle Level Sensor Mechanical Fault) C126016 (Compressor Electronics For Level Control, Voltage too Low)
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