adblue system audi a6

I have a problem with the adblue system in my audi a6 c7 ultra
First time I had 2 errors :
P20E8 - pressure too low and P20FE Reductant Metering Module Malfunction
After I cleaned the addblue tank(the pump works properly, reducing agent pump indicates 50%; before I cleaned it, it indicated 0%) , I only remained with one error code : P20FE.
Can u help me please.
Thanks.

dan.nicolcea said:

Can u help me please.

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