“D” (drive shift) flickering on dashboard

[NissanMarch0217]

I have a 2011 Nissan March, currently experiencing an issue which cannot seem to be resolved.

A few months ago I noticed that when the gearshift is set on drive (D) or reverse (R), the gear sign on the dashboard starts flickering / flashing. At times it does this at random but other times it seems like it is triggered by either the blinkers or the break paddle. 

I had my car checked by 2 different mechanics but the computer doesn’t seem to be registering any episodes / faults. A few weeks ago I also noticed that the engine warning light was on - had this checked aswell but nothing came up on the computer. 
 

Has anyone experienced something similar?