07 Rav4 4cyl O2 sensors question

[Carguy21]

A friend who has a 2007 Rav4 4cyl has to replace the oxygen sensors. He would like to know how many of them the 07 Rav4 has.

As far as I know that car has only 2 of them, the downstream sensor and the air fuel ratio sensor, am I wrong?

 

[86cutlass307]

If it has the I4 engine there is an 1 upstream (A/F sensor) in the exhaust manifold; it should be visible when you open the hood and look into the engine bay. There is 1 downstream aft of the Pass. side tire in the exhaust pipe, you have to crawl underneath perpendicular to get the best angle to see and R & R that one. Overall, not that hard of a job. I used Denso and reset the ECM so it could relearn; good time to change the plugs if they are close to their mileage. Good luck

 

[Leo99]

The top one on the exhaust manifold is usually the one that goes bad. It's easier to get to and change.

Amazon sells the Denso ones for about $55 each.

I didn't reset the ECU when I changed mine out.