Should You Replace O2 Sensors When You Replace Catalytic Converter?

Hello, iam Lazaro Rodriguez, No wild parties while I’m gone, mister!

Should You Replace O2 Sensors When You Replace Catalytic Converter?

O2 sensor is an emission system part. If their contention is that the sensor is good but can’t be safely removed and replaced without damage when replacing the cat, that’s their problem not yours. It should be done on their time and shouldn’t cost you.

SYMPTOMS OF A BAD OXYGEN SENSOR

In this video,

What/why/how: Downstream O2 sensors (and catalytic converters)

Oxygen

Replacing O2 sensor on Pontiac and other GM 3.8 (Code P0420)

This code typically means that