Oxygen sensors, also called O2 sensors or Lambda sensors, are used in motorcycles, cars and trucks to give the vehicle computer a reading of oxygen in the exhaust stream. The information is used to adjust on the fly the air-fuel mixture for both emissions and for performance and driveability. A poorly performing or failed oxygen sensor can result in more pollutants, in poor gas mileage and in driveability issues like hesitation or poor acceleration.
In this video I'll show you real-world examples of good and bad sensors and how to test them on motorcycles (or cars) using a digital volt meter or specialized software.
0:18 Intro to basics
1:57 Number of wires
5:06 Locating on different bikes
6:32 How to remove the sensors
8:23 Testing methods for the DIY
10:19 Piercing probe demonstration
10:55 Testing with a digital multi-meter
13:50 Testing a Triumph Bonneville (TuneECU)
17:13 Testing a Triumph Tiger XC (TuneECU)
18:48 Testing a BMW R1200RT (GS911)
23:13 Final details
![](https://i.ytimg.com/vi/oDan2q9Q7Gc/maxresdefault.jpg)