Aygo 2007: Engine Light

Car specs:
Toyota Aygo 2007, 4 Door
1 Liter, Petrol, Manual

My GFs Aygo turned on the Engine Light, my mechanic is currently in no position to take it in for now so I thought I'll diagnose it myself.

Got an ODB2 Bluetooth scanner from a friend and the problem is as follows:

P0171 - SYSTEM TOO LEAN

Here is the freeze-frame of what cause the trouble code:

http://i.imgur.com/AmYI20q.png

My friend also suggested to check the O2 Sensors and so I did a test:

http://i.imgur.com/9mcsNvl.png

Anyone technical enough and has any ideas would be much appreciated!!

Thanks!