The codes suggest that the passenger side of the engine is shutting down.
That suggests to me that you "might" have excessive exhaust backpressure.
I would have the exhaust backpressure tested on that side.

Has your ML had the catalytic converter recall??


Using Bosch +4 plugs isn't a good idea. They are "cheap" aftermarket JUNK!

If they were any good at all MB would use them from the factory!

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