Understanding Freeze Frame Data-Help

Hil · Post by **Hil** » 19 May 2022, 09:15

Hi Folks, I ran the freeze frame data and took pictures of the screens because while I saw the DTC of PO420, I could use some help understanding what the rest of it means. The car was at roughly 2500 RPMs when I ran it. Any insight would be appreciated. AS background, both 02 sensors have been replaced as have coil packs, fuel pressure sensor and fuel pump module. I do believe one of my catalytic converters is malfunctioning ( not plugged) but not sure which. The car is a 2005 S40i and I cannot get it in to a shop anywhere for weeks to have them check it out.

CarCapers · Post by **CarCapers** » 07 Jul 2022, 18:54

Code P0420 is “Catalyst System Efficiency Below Threshold (Bank 1).”
"This code indicates that your car’s computer has detected under performance from the Bank 1 catalytic converter."
Does your code reader support live data? Can you get an infrared no-contact thermometer sensor?
This guy gives a short tutorial on how to check your catalytic converter(s), www.youtube.com/watch?v=9VZ5K8n5jj0