ka 2006 - ford ka engin light - drikus

good day I hope some one might be able to assist. I have a ford ka 2006 1.3 ambiente. The engin light came on and i had a diagonstiv done. the diagnostic read out said " to lean" after a reset it seem to be fine.

5 days later it came back on. when it was of the car surged. now it goes like a rocket but extremely heavyon fuel.

i have replaced following. coil-pack, plugs, bougicourt, full service done, fuel filter and petrol tank was dropped and system is clean. Carbon filter is cleaned aswell.

Any idea why ? Thank you

ka 2006 - ford ka engin light - skidpan

Oygen sensor most likely culprit.