'Engine Fault! Reduced power' (Full engine power no longer available, possible to continue journey, drive moderately etc) appeared yesterday after a 40 minute motorway journey and 10 minutes of town driving, 2 minutes before I arrived home. I was pulling away from lights at the time.
The message had disappeared this morning. I've been suspicious that the fuel pump has been failing as turnover has become steadily more sluggish with several cranks required the last month or two but never failed to start.
Despite the message having disappeared will this have thrown a permanent code for a garage to read? I don't fancy booking it in for a warranty claim to be told it's fine,
Thanks.
(2010 335i - 41k miles )
Yes it will have done. My advice - go for a hard drive and see if it does it again. When my HPFP failed, the car was perfectly driveable still, but just had no power and the "Engine fault drive modestly" warning - although it depends on what fails within.