This problem have been coming on and off for quite sometime with my ride.(Car model is E46/325i/2004/Auto GB/M54 engine.)Whenever the error comes on, the following error lights will be turn on.Scan the error on the DME using INPA and the following error is display: 211 LLFS Error at mechanical. (LLFS Jammed Open)Check the cause of the error and it indicated as follows:-I have changed the following things (all DIY).1. MAF2. CCV3. DISA4. ICV5. Air Intake HosesNote: 1. My DISA was found to have the vane slightly offset and loose. After changing, the frequency of the alarm is about once a week as compare to about 3 times a week.2. The funny thing is the alarm is always generated at around 1880 rpm and around 90 Km/hr. No alarm is generated when I drive above 100 km/hr or below 60km/hr.3. When the alarm comes on, there is slight lost in power. I can reset the alarm by switching off the engine and restart it. Power is resumed after restart. (I do this while car in motion by shifting gear to neutral)Question:1. What is the root cause of this problem?2. Read somewhere the root cause is due to the Vanos Intake camshaft sensor. (My car never stall) 3. Leak somewhere else?4. Adaptation of the fuel throttle need to carry out?Please help if you have encounter this problem before.