Q5 Egr valve clean or replace


Registered User
It looks like I have an egr valve error

Trouble codes:
P040100 - Exhaust Gas Recirc.Flow Insufficient Detected
Date: 2018-06-13 17:46:05
Priority: 2
Malfunction frequency counter: 17
Unlearning counter: 255
Engine speed: 1353.00 1/min
Normed load value: 57.3 %
Vehicle speed: 40 km/h
Coolant temperature: 72 °C
Intake air temperature: 26 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 14.100 V
Dynamic environmental data: 209628133B0B6511881CBE104DFADA102404F1113807A8105604A7105A0B6F

Should I replace the valve or take off and clean it and put back

What's your thoughts