Engine management light and lots of codes!!!!!!!!!

Got a micra 1.2 auto k12 for my auntie to drive and the ems light keeps coming on and displaying the following faults.
P0705 PNP SW/Circuit
U1000 can com circuit
U1001 can com circuit
P0011 Intake VTC bl
p0705 is gear tick controller i believe, can errors most likely bad earths on the vehicle.
Po011 can be anything from a cam/crank sensor to stretched timing chain.
Car runs lovely no rattles or anything which would suggest timing chain but faults reappear shortly after deleting the codes.
Help????
 
OP
OP
S
deleted codes again and drove around only recuring codes now are:
P0705 PNP sw/CIRC
P0011 INTAKE vtc b1
P0705 IS PRESENT BEFORE THE ENGINE LIGHT COMES ON P0011 BRINGS LIGHT ON AND LIMP MODE.
 
Top