That's what I thought.
Whilst waiting for lunch you could search YouTube for O'Rileys Autos and watch Jimmy cleaning 100 Landrover DPFs.
Mostly Evoques and Disco Sports.
In many cases he shows the the Adblue (DEF) injector blocked with crystallised chemical.
AND he'll show the DTC codes that pop up.
It's fixed to the DPF and doesn't require any really fancy tools to get out.
He's experienced and it takes him about 15 minutes.
That'll probably equate to 3 hours at a JLR dealership
Rule No.1 : if going to a Landrover dealership for diagnosis have a huge pinch of salt ready.
I've had my fingers burnt with diagnosis from the 'Computer says' generation technician.
Knowledge is power - watch O'Riley.
And thanks to Jimmy we are all experts.