Engine Failsafe Mode after CCV and Vanos Repairs
 

Looking for some help. Just finished the CCV replacement and the valve cover gasket, vanos rebuilds and replaced spark plugs. Now the X5 is in Engine Failsafe mode and idles at 1000 rpm. Any ideas where i might have made an error? all looks good, plugs look like they are are back in place. Before i did the work, all of a sudden the idle started shaking very rough.

Yeah, the vanos work has me worried that it somehow got mistimed. Need codes to help us know what's going on. Autozone, etc. will read them for free if you don't have a code reader.

Well i fixed the problem. Three codes came back to TB so i removed it, cleaned it well with a rag and TB cleaner and put it back. It needed the adaptation procedure set for it which i found on this site. Starts, idles at 550 no misses and runs strong!

Good job! Nothing like the self-satisfaction of a successful DIY and troubleshoot! :)

TB = throttle body? Having a hard time understanding what happened to cause this based on the work you did. Please elaborate.

one code read Tb requires adaptation. I assume when you remove it to complete the CCV replacement, it needs a reset to communicate with the engine and trans. Both went into failsafe mode after. The car would only run at idle. I took it out, gave it a good cleaning with a rag and cleaner and re installed. The adaptation procedure is nothing mote then ignition on, gas pedal to floor five seconds, release and turn off, wait 2 minutes then start. it worked fine.