335i N54, Engine Light Alert, Reduced Power

airnow

Well-Known Member
Hi, I am driving a 335i. Have not really done any hard acceleration on the car until recently when I did about 3 times of hard acceleration using SD mode in a late night. After the last try, I got an alert saying Reduced Power or Loss, Engine something something (cant remember exactly). Despite the alert mentioned reduced power, the car was able to move around atleast 80km/h but the rev changed gear at around 3000 or higher (normally around 2000+). Power loss could be felt but was not alot.

After the incident, I stopped at a carpark and switched off the engine for 5 minutes. Restarted the engine and everything was back to normal. Been driving it around for 2 days and have yet to feel any different. Probably because I did not do any hard acceleration yet.

Has anyone experienced this before? It does not seems like HPFP problem since I have no problem cranking the engine.
 
Re: 335i N54, Engine Light Alert, Reduced Power

99% HPFP problem. It happens without the cranking symptoms pal
 
Re: 335i N54, Engine Light Alert, Reduced Power

This is very bad.. heard alot about 335i HPFP problem. Shall bring it to workshop to check the coding. Anyway today is the 3rd day and its still good but I have no confidence in the car now.
 
Re: 335i N54, Engine Light Alert, Reduced Power

Yes still have almost 3 years but its a PI car, warranty covered under TWM.
 
Re: 335i N54, Engine Light Alert, Reduced Power

It says 2A87 exhaust vanos, mechanism? and 3100 boost-pressure control, deactivation (probably due to jb3).
 
Re: 335i N54, Engine Light Alert, Reduced Power

my guess is the solenoid(s)
 
Re: 335i N54, Engine Light Alert, Reduced Power

Seems to be. Deleted the code and will full throttle soon. If it shows up again then I will do a warranty claim. Seems a a common problem on 335 according to forums.
 
Re: 335i N54, Engine Light Alert, Reduced Power

Every morning I floor 2nd gear once on my way to work. No CEL leh. I also N54B30. Am using JB6 ...keke
 
Re: 335i N54, Engine Light Alert, Reduced Power

Maybe JB6 more advance. I will go check with BOSS regarding JB6. haha.
 
Re: 335i N54, Engine Light Alert, Reduced Power

airnow;620200 said:
Just read your thread. Even since then, you did not get the CEL anymore? I have not tried to push it hard yet.

touch wood, everything has been A-OK since then :)
 

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