Ok, on my way in to work I loose all boost whatsoever. No CEL, nothing, my S60R just got transformed into a N/A motor. I mean a slug would probably move faster than what I felt. <p>I get to the office garage and I can't hear my turbo?! WTF? No leaks of any kind. I place my PPC Diagnostic tool and this code comes up ECM601C: Turbocharger control system, boost pressure fault, signal to high.<p>Now the weird part, I return back to the garage after my shift (10hrs), start the car, tubo is back, I make it home, full acceleration and all, re-check, no codes <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0"><p>Any ideas what can be the cause or what needs to be done?