Hi,
Based on that code, you are getting too much fuel to the engine. In this case, it wouldn't be a vacuum leak. A vacuum leak would allow unmetered air to enter the engine and create a lean mixture. This code can be caused by several things. However, here is a link that shows how to test for a vacuum leak:
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Have you checked fuel pressure? Is this the only code present? If you have a live data scan tool, could you let me know the short-term fuel trims?
Make sure there are no restrictions in the air intake tube/air filter box. Also, check fuel pressure. Here is a link that shows how it's done:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
I attached the manufacturer's pressure specifications below. Do this and let me know what you find.
Take care,
Joe
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Monday, August 30th, 2021 AT 7:20 PM