Hi,
If you are standing in front of the vehicle with the hood open, bank two of the engine is in the right side. See pic 1 below.
As far as the code, when you only have one side of the engine with a lean mixture, it limits possibilities. See pic 2
By chance, do you have an exhaust leak on that side of the engine? Let me know. Also, here is a link that explains how to locate and fix a vacuum leak. Try this and let me know what you find.
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Let me know what you find or if you have other questions.
Take care,
Joe
See pics below.
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Saturday, March 5th, 2022 AT 8:49 PM