03 disco 2 cel codes

[formula12003]

Hi all, just purchased my first rover, its an 03 disco 2 with 90k miles. Cel light is on and it hesitates and smells a little, checked the codes and there were 8 codes all referring to o2 sensors, i cleared the codes and now the hesitation is gone. Codes have not returned yet and its running fine, my question is do i have a cat problem or should i be looking at something else? Thanks for the input!!

 

[joey]

I would normally ask what the codes were? But since you deleted them, it could be anything from a loose gas cap to the air filter lid not being on straight to MAF sensor being dirty to bad O2 Sensors...

Your First Rover I would recommend changing plugs, wires, and all fluids so you have a base line of when things were done.

Also welcome to the forum.

 

[formula12003]

Thanks for the reply, the plug wires look new as is the air filter, i was told all 4 o2 sensors had also been replaced, the codes came back and are as follows
P0130
P0150
P0174
P0171
My plan was to clean maf and check for vacuum leaks