Hello!
Does anyone know what the error code 2211 means on an Audi 100 TDI (Type 44) with the 1T engine? When I read the memory, I always get 2211, even if I clear the memory and then restart the ignition. A friend suggested that it might be the needle lift sensor

and suggested measuring the resistance with a warm engine, which should be in the range of 80 to 120 ohms, and in my case, it's about 110 ohms with a warm engine??? Is it really that, or is it something else??? Is there a way to test it, or does it have to be replaced directly? By the way, the injectors have 50,000 km on them.
The reason I accessed the memory is because sometimes there is significant shaking accompanied by a stronger exhaust sound.
P.S. When I turn the ignition on, I hear a clicking sound from the fuel injection pump for about a minute, and then it stops. Is this normal, or is it related to the problems I mentioned earlier?
I'm quite handy with tools, but when it comes to the electronics of TDIs, I'm unfortunately HELPLESS

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Best regards, BLT!!!