P2CAB and P2CA7=lambda/precat o2 sensors, my car threw the same two codes when mine went bad a few months back. The car will start to misfire on cold start and generally drive poorly, which makes perfect sense seeing as how it'll have a tough time getting AFRs correct. If you're under warranty just take it in (unmodded obviously), if not, O2 sensors aren't too brutal from a cost standpoint. Any competent shop can take care of it quickly.
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