Hi there dose anyone else have this problem, a orange warning light comes on and I believe it's called the ECU warning light, when it comes on it makes my d40 sluggish and loses a heap of power it says in the drivers manual to drive over 70kph continual until the warning light disserpers, this dose work but this will happen at least once a week I've been told its normal for disels to do this on occasions by a mechanic but why is it happining so much. It's really frustrating me and any tips or advise would be much appreciated. Thanks Aaron 2010 stx turbo disel 50,000km