hello there,well finally received my code reader from ebay and error code poo31 is coming up which ive found out is the front 02sensor. anyone replaced one of these before if so is it easy,location on 2001 bugeye wrx. cheers in advance.

 

either senor is not to bad to change get the exhaust warm then unplug in slide a 22mm spanner over it and crack it off and undo mate

 

turn the steering all the way to the right and look thru the wheel arch on the drivers side(front of wheel),
there is a small plastic cover held on with 3 plastic 2 part rivets,
as mentioned a 22mm spanner works better then the actual 02 sensor tools.
Ive used world car parts for the Denso sensor.
hth

 

Thanks very much will look tomorrow.(:-D