Audi A7 3.0 TDI Low Adblue Pressure Problem 

When ad blue dries and comes into contact with air, it will begin to crystallise due to the chemical composition of the liquid

@@enkamotors7012 can it cause any problem on the car except that it turns white

@@ribarribic9066 the crystallisation will not cause any problems for the car. Only if there’s a leak that means there’s problem with adblue system and car could possibly stop working once the adblue countdown comes on

@@enkamotors7012 that means the leak must be patched so that the car does not stop

@@ribarribic9066 yes the leak needs to be repaired to avoid the vehicle breaking down. You will have to replace the pipe as patching it up will not be a solution

Part number please!!!

Hi. Did you ever get a part number? I have the same issue !

I realy want that partnumber

check my comment

Metering line for reducing agent injector 4G0131984AM

Sorry, I’m not sure of the part number

Part number is 4G0131984AM

Metering line for reducing agent injector 4G0131984AM

Can't say anything until the machine is plugged up and there fault codes and also checking live data, could be the pump, could be the adblue pressure pipe could also be the adblue injector nozzle as well as the nox sensors.

@@enkamotors7012 thanks,was off for months now back on,pain of my life

Have the same issue. As we speak is 0 and won't start. 650 miles no restart but around 140 would get the sign off by itself. This time went right to the 0.

@@tonyck7126 can I ask on the dash was it saying 650 and counting down or just stayed at 650

@@connermac2543 650 and counting down. Have an A6.