Code 2B64, manifold code?

2009 MINI COOPER S

105,000 MILES • 4 CYL • TURBO • 2WD • MANUAL

BHAMDOC1973

MEMBER
2,007 POSTS

Has a very minor hiccup when cold, only have one code 2B64 Digital motor electronics: intake manifold, unmetered air.

Oct 12, 2022 at 10:28 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

So, the code 2B64 means there is air leaking into the intake manifold that is not passing through the air meter, it will probably be the intake is cracked which is common or you have a gasket or hose leak. Check the air intake tube for leak, use a flashlight and really go over the plastic intake then if you can't find it test the engine cold by following this guide:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Here are some key points to look for a leak

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Oct 12, 2022 at 5:44 PM

BHAMDOC1973

MEMBER
2,007 POSTS

Thanks. I will do a smoke test. Could a valve cover gasket leak cause this?

Oct 12, 2022 at 5:53 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

yes, it could, please check it for cracks as well.

Oct 13, 2022 at 2:06 PM

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