[denverroat]

Hello everyone, I recently had a 2013 60,000 mile scion frs go in for a pre inspection and they found a few things I am unsure of. It gave us 2 codes (P013A and P2096). The car is stock besides an exhaust and rear sway bar (as far as i can tell). On the car fax it also has failed to pass emissions a couple times leading me to think it’s cat related but not entirely sure because it passed later on. I know these cars o2 sensor codes can mean all sorts of things like an exhaust leak, a bad cat, and even just a bad sensor, but was wondering if these 2 together or these mods are making anything stand out for the potential cause. Is there anything I can do to further diagnose and narrow down the issues occurring? Aside from those 2 engine codes we also got a code (U1201) that was titled “CAN failure/error counterfeit circuit”. This one i’m very unaware of, even after research. Any info on this one would be a lot of help (attached a photo of the codes if needed.

I appreciate all the help ahead of time (: