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DTC P2271 OBD-II Trouble Code: O2 Sensor Signal Stuck Rich Bank 1 Sensor 2

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Got a DTC P2271 at around 52K miles.  Ordered 4 new sensors from Rockauto.com, which will take a few days to arrive.  

Bank 1 sensor 2 is the downstream, post-cat sensor on the passenger side.  It measures the exhaust after the cat.  Although just that one is showing I wanted to have all of the sensors on hand to replace together or as needed depending on how hard they resist. 


2023 Cadillac CT4-V Blackwing

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