Hi all, I get these two error codes with my C4 Grand Picasso. U1324 Error: No communication with the pneumatic suspension ECU: No signal U1124 Error: No communication with the pneumatic suspension ECU: No signal Now the meaning is not quite clear to me. In the display still stands “feather defective”. What exactly do these messages refer to? On the compressor for the pneumatic suspension or on the control unit for the suspension behind the driver’s seat i The car can still be driven. However, it no longer adjusts its level. The compressor does not start. What also does not work are the two buttons in the trunk to switch off the level control and drive it up and down. What could be the problem now? Maybe compressor broken? ECU? 5A fuse in the fuse box I checked and is fine. I am grateful for any hint.