Gap11D not showing a fault

[Deck]

I need some help please from more experienced people than myself. I have a 2013 LR319 Discovery 4 twin turbo. I had the vehicle parked for about 8 weeks and decided to charge the battery. Disconnected the main battery and charged it up. I mention this as it seems too coincidental that I had the following fault occur.

A couple of days later when I started the car it showed a Restricted Performance message on the screen. I used my Gap 11D tool but it showed no faults. I cleared faults any way but still no faults showed on the Gap tool. I disconnected the negative battery post for 20 minutes but no affect still the same, Restricted Performance still showing on screen.

Any smart tips on this please.
thank you regards
derick

[V8Ian]

Does your model need to have the computer told it has a new battery?

[Deck]

Does your model need to have the computer told it has a new battery?
Thank you, I am not sure but I will investigate.

[Tombie]

After 8 weeks its possible turbo actuators arent playing smoothly... I have seen this before...

[Deck]

As it turned out it was the mass flow sensor B. I ordered two from LR Parts UK on a Friday and they arrived on the Monday. Replaced and all is well.
cheers
derick