2003 BMW X5 P1632 / Engine Failsafe

From what info I can find. It states that this is throttle actuator issue. I would first check to see if you have any cracks in your intake tube that is allowing in any un-metered air behind the MAF sensor. Check wiring at the throttle body for any breaks or exposed wire. If all good, I would try to get some throttle body cleaner and cleaning the throttle body and see if that helps. After cleaning try doing the throttle reset procedure.."With the car off, turn the ignition to the second position for 10 seconds(do not start) then turn the ignition off for 10 seconds. Then start the car immediately."

Thanks for the prompt response, really appreciate it, will do what you have proposed, but first got to remove a gasket that has the butterfly valve stuck open. Ironically I had found the solution earlier but was not sure, when remove the upper intake boot and stuck my hand down into the lower boot(pain removing) I felt the gasket there. Here is a post from another site that actually showed the entire thing in detail: http://www.xoutpost.com/bmw-sav-forums/x5-e53-forum/88939-engine-failsafe-prog-solved.html
Go to lower part of page with the pics and you will see my issue, now trying to move butterfly valve so that I can actually remove the gasket and replace. A minor thing that caused a major headache, but thankfully not one in the pocket as a dealer would have probably charged me the sticker price of the car. And thanks again

ok, It seems as if that may be your real issue.