Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - P0420 Code

dixie.99 · 09-17-2020, 10:17 AM

Hi! I need advice or answers lol, whichever. I have a 2015 FRS and I recently changed my headers. After a week it started throwing the P0420 code. And I’ve heard so many ways to fix it. Get it tuned, O2 needs an extension or replaced completely.

The thing is.. my engine light cuts on and it’ll stay for a while and than cut off. It’s been off for almost a week and it came back on 2 days ago. I work at a shop, but we’ve been super busy and I haven’t had the chance to pull it in and have it checked.

Sent from my iPhone using Tapatalk

09-17-2020, 10:17 AM	#1
dixie.99 Junior Member Join Date: Sep 2020 Drives: Scion FR-S Location: North Carolina Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	P0420 Code - Engine light glitches on/off Hi! I need advice or answers lol, whichever. I have a 2015 FRS and I recently changed my headers. After a week it started throwing the P0420 code. And I’ve heard so many ways to fix it. Get it tuned, O2 needs an extension or replaced completely. The thing is.. my engine light cuts on and it’ll stay for a while and than cut off. It’s been off for almost a week and it came back on 2 days ago. I work at a shop, but we’ve been super busy and I haven’t had the chance to pull it in and have it checked. Sent from my iPhone using Tapatalk