Does anyone know how many o2 sensors a 2007 Ford Ranger Sport 3.0 has?

And possibly location



Truck has 82,000 miles and has a P0420 Error code

 

2007 3.0l should have 4 O2 sensors

There are 2 upstream O2s
Near the engine on the exhaust pipe as it leaves the Exhaust manifolds on each side of the 3.0l V6 engine

In this picture you can see the 2 upstream sensors on the ends of the 2 pipes on the left: https://files.kyozou.com/Picture.asp...00&id=23584212

Then 2 downstream O2s
One inside each Cat converter, they unscrew they are not part of Cat converter



P0420 Catalyst System Efficiency Below Threshold (Bank 1)

Bank 1 is the passenger side of the engine and exhaust, and this code can also mean the Cat converter on that side has failed

O2s only last 100k miles or 12 years, so yours are way over due to be changed, so for sure do that first