Audi A3 Insufficient air flow fault code Po401

hayess

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Hi, I have just seen the engine management light come on and after running the VCDS software it came back with the following code, can anyone advise what could be wrong and could it affect my engine and fuel economy?

many thanks

1 Fault Found:
16785 - EGR System
P0401 - 000 - Insufficient Flow
Freeze Frame:
RPM: 1722 /min
Torque: 66.0 Nm
Speed: 14.0 km/h
Load: 24.3 %
Duty Cycle: 14.7 %
Bin. Bits: 00101100
Mass Air / Rev.: 365.0 mg/str
Mass Air / Rev.: 680.0 mg/str
 

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