Notifications
Clear all
0
08/04/2021 8:32 pm
Topic starter
Hi. Just bought these O2 sensor spacers from Amazon to see if they'd solve my P0420 code that I've not been able to fix for a while. Would anyone happen to know if there should only be a spacer on the downstream O2 sensor and not the upstream one? The package I ordered came with 2 spacers so I put them both on, but after doing some reading online, a couple people mentioned they only did it on the downstream. Should I remove the spacer from the upstream sensor? Thanks!
1 Answer
2
08/04/2021 11:29 pm
You should never put them on the front O2 sensor. The computer needs accurate voltage data from that one to adjust fuel trims.
Thank you!