Posted by Paul neasham on November 17, 2016, 1:50 pm
Year of Manufacture *: 2006 Engine Size and Code *: V10 S85b50a ( Optional ) Scanner Used: Dis57 ( Optional) Fault Codes: 27d0
Been carrying out some repair work on the throttles i.e.removing and refitting after specialist repair. Read fault codes before starting and made a note. On completion cleared the codes all but one, 27d0 fuel pressure control adaption factory max stored fault present. The eml is not illuminated and car runs ok. I think the code has been present for some time but don't know if had anything to do with the throttle body fault.
System uses 2 pumps in parallel, 2nd pump switched on by EKP module under high load, fuel pressure varies between 3-6 bar depending on load and there is a pressure sensor around the n/s front wheel area.Very sophisticated system and I don't think tied in with your throttle problem, possibly 2nd pump not being switched on and system maxing out under 1 pump operation.