Toyota Echo : Changing Oxygen Sensor
Here is the document of Toyota Echo: How to change post catalytic O2 Sensor. This guide shows how to change the oxygen sensor located behind/after the catalystic converter. This DIY will provide step by step instructions to change the Oxygen Sensor located in Bank1 Sensor 2. This oxygen sensor is located behind the catalytic converter. Word from author “The reason I had to change the oxygen sensor is because my check engine light was trigg…





