Evap Emission Control Sys: Incorrect Flow ????

[Nige_RS4]

Just scanned my car and got this DTC ....

1 DTCs Found:
16825 - Evap Emission Control Sys: Incorrect Flow
35-10 - - - Intermittent

Any ideas? RossTech WiKi says;

Possible Causes
Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) faulty/jammed
Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115) faulty/jammed
Evaporative Emission (EVAP) Canister Sealing faulty
Pipes between Tank Breathing and Throttle Body leaky/blocked
Possible Solutions
Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
Perform Output Test
Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115)
Check Evaporative Emission (EVAP) Canister
Perform Basic Setting
Check Pipes between Tank Breathing and Throttle Body

Where is the EVAP canister?

[Virdee Autos]

I think its on the O/S wheel arch. You'll need to remove the wheel arch liner to gain access, as I remember seeing this when I had mine off.