A Toyota master diagnostic technician shares all you need to know about Toyota Oxygen sensors and Air Fuel ratio sensors.

In this new series on my channel I will take a monumental task of explaining the overly complicated engine computer control for OBD2 emission standard work. I will follow my channel's theme of simple but complicated to make this information easy to follow and understand for Toyota owners interested.

In part 4 of this series we will cover an important subject. Oxygen sensors and Air fuel ratio sensors. How each of them work and what are the differenes between them.

I will also cover how they are installed in the car which will take us to the conversation of Engine banks, which one is bank 1 and which is bank 2.

Towards the end of this video I will explain how these sensors have a significant impact on how the engine computer is using the input from these sensors to control the injection volume.

Lastly I will share some DIY tips from the real world. These are tips and tricks that you will not find in a book and you'll only find from years of experience working on these cars every day.

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0:00 Intro
0:31 Oxygen Sensors
3:49 Air Fuel Ratio Sensors
7:01 Sensor locations
11:53 The most important thing!
21:30 DIY Tips