Does your exhaust smell like rotten eggs?

1. Is there a question? If so a clear, concise description of your car problem belongs in the body of your post. There appears to be a partial attempt in the tags with most of it cut off since that's the wrong place. About the only intelligible part is "P0420". If you search for information on that code you will find there are a number of possible causes including, but not limited to, bad catalytic converter.

https://www.walkerexhaust.com/support/tech-tips/diagnosing-catalytic-converter-p0420-code.html

https://www.carparts.com/blog/p0420-code-catalyst-system-efficiency-below-threshold-bank-1-2-2/

https://www.obd-codes.com/p0420

2. The title line should be used for a short description of your topic, not your vehicle description. (Title edited to reflect the OBD2 code found in the tags.)

3. For some reason, your browser is generating several duplicates when you submitted your post. (You accidentally posted this topic 4 times.) Are you having network issues? If so, then please wait until you have a stable connection. If you are pressing the submit button more than once, please stop. Press it once, and wait for it to finish processing. Otherwise it creates more work for moderators to clean up, and eventually the system will automatically ban your from entering. Thank you.