Hey Guys,

A friend recently gave me an 01 X5 with 118,000 miles. I am the third owner, the first bought it new and had it serviced meticulously.

It runs great and everything works as it should except it the Service Engine light has been coming on for the P0011 code.

1. I swapped CPSs to see if code would show on other side and nope came right back to Bank 1.

2. It is quiet upon start up, but makes a very soft clug-clug-clug sound when hot.

I plan to check oil pan for plastic debris, what other things can I do to pinpoint the cause?

I am pretty decent with a wrench,(started on wrenching on 60's american cars) but my first bimmer might as well be a alien space craft.