Hi everyone,

 

My first ask here. I have the dreaded P20EE00. I'm looking to start by checking and cleaning the adblue injector. Am I right in thinking it's location is either on the exhaust under the adblue filler somewhere or is it in engine bay at the rear left. 

In the engine bay, just after the turbo in the top right of the engine bay.

The actual adblue  injector is near to the brake fluid reservoir on the exhaust, stand looking under the bonnet from the front of the car and it’s the top left of the engine with a adblue feed pipe and 2 small coolant pipes going to it 

Circled red for you