06 sienna P0430

Question

Can this code be broken down further to see exactly what sensor is bad before replacing the Cat?

That's a $600 Job

Answer 1

Hi there,

You need a scan tool that can see the active data from the bank2 rear O2 sensor. When the converter is working properly it has a different pattern on the sensor then when it's not working properly. This is how we verify the converter is the problem and not just a faulty rear O2 sensor.