Hi,
I have had a code read on my Golf MK4 1.6 16V on a 2003 plate and the engine mangement light came on, the codes are as follows
17586
17604
Oxygen sensor bank 1??
Is this an expensive fix and would genuine parts be advisable?
I have an MOT due next week so i'm guessing it's going to fail on the emissions

Any help would be great
Thanks