# Toyota Sensors

**URL:** <https://community.cartalk.com/t/toyota-sensors/11442>\
**Category:** Maintenance/Repairs\
**Tags:** sensors\
**Created:** [March 4, 2008, 7:30pm UTC](https://community.cartalk.com/t/toyota-sensors/11442 "2008-03-04T19:30:01Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![neenaw](https://avatars.discourse-cdn.com/v4/letter/n/aeb1de/32.png) [@neenaw](https://community.cartalk.com/u/neenaw)\
**Post date:** [March 4, 2008, 7:30pm UTC](https://community.cartalk.com/t/toyota-sensors/11442/1 "2008-03-04T19:30:01Z")

</div>

How many oxygen sensors in a 1999 RAV 4 Toyota with California emission standards?  
  
 and where are they on the vehicle?

---

<div class="post-metadata">

**Author:** ![1981.911.SC](https://avatars.discourse-cdn.com/v4/letter/1/c6cbf5/32.png) [@1981.911.SC](https://community.cartalk.com/u/1981.911.SC)\
**Post date:** [March 4, 2008, 9:53pm UTC](https://community.cartalk.com/t/toyota-sensors/11442/2 "2008-03-04T21:53:36Z")

</div>

Probably 2, the first one measures the oxygen in the exhaust gases before the catalytic converter to determine how much fuel the injectors should squirt, and the second one measures the exhaust after the catalytic converter to make sure it is doing its job.

---

<div class="post-metadata">

**Author:** ![hd72mm](https://avatars.discourse-cdn.com/v4/letter/h/9fc29f/32.png) [@hd72mm](https://community.cartalk.com/u/hd72mm)\
**Post date:** [March 6, 2008, 2:40am UTC](https://community.cartalk.com/t/toyota-sensors/11442/3 "2008-03-06T02:40:11Z")

</div>

[www.rav4world.com](http://www.rav4world.com) is great info on rav4s use search to find what you want