How many O2 sensors?

[Holiday]

Are there 4 O2 sensors total? Someone told me 2 but I have 173 and 177 codes that suggest four as it's either side or front or rear, if I understand it correctly. Would seem odd all 4 sensors suddenly going bad which I think would indicate some other issue like wiring.

 

[luigisho]

Each side is refered to as either right/left or front/rear. there are only 2.
Right= rear
Left = front

Both are rich

Ford OBD/OBD2 Codes – TroubleCodes.net

www.troublecodes.net

 

[Holiday]

OK thank you.

 

[Greg Corcoran]

Are there 4 O2 sensors total? Someone told me 2 but I have 173 and 177 codes that suggest four as it's either side or front or rear, if I understand it correctly. Would seem odd all 4 sensors suddenly going bad which I think would indicate some other issue like wiring.

You don't indentify what year SHO you're asking about. Presuming you posted in the correct part of the forum (89 - 95) then yes - 2 is correct.