Notifications
Clear all
0
05/03/2021 5:00 pm
Topic starter
Hello Scotty. I have a 2016 focus with 60k miles on it that keeps getting a p0420 code. I took it for a diag and after 2 days they told me it was one of the O2 sensors. I replaced it and the light keeps coming back on and off. Is the other sensor bad or is my cat converter really bad at 60k miles. Please note as well I just replaced the Evan purge control valve if that has anything to do with it.
1 Answer
0
05/03/2021 6:34 pm
Which 02 sensor (before or after the cat) did you replace? And did you replace the sensor with an OEM one?
See below:
https://www.obd-codes.com/p0420
Along with video on diagnosing the cat:
https://m.youtube.com/watch?v=9VZ5K8n5jj0
Share: