2007 honda accord 2.4l 4 cylinder vp
So I had a code for p0420 and we used a cheap version of a cataclean and after coming back from basically a 300 mile trip the check engine light came back on one for the same code but also p0137 and idk how to properly diagnose this problem cause indont have money to buy a new cat and I don't know the proper scenarios for this issue
dont have money to buy a new cat and I don't know the proper scenarios for this issue
P0420 does not necessarily mean you have a bad catalytic converter. Have you looked up the list of potential causes and the diagnostic steps for those codes? (The 2 codes may have the same root cause.)
https://www.walkerexhaust.com/support/tech-tips/diagnosing-catalytic-converter-p0420-code.html
https://www.way.com/blog/p0420-code-what-it-is-and-how-to-fix-it/
https://www.obd-codes.com/p0420
https://eeuroparts.com/blog/p0137-code-explained-causes-fixes-and-more/
https://www.obd-codes.com/p0137
