Hi my 06 Focus LX has developed a powertrain malfunction, indicated by an illuminated red exclamation mark surrounded by a jagged circle in the bottom right hand quarter of the rev counter. It happened a few weeks ago and then on Saturday 3 times, always at motorway speeds causing loss of power, each time I pulled onto the hard shoulder, switched the engine on and off, the light went out and the problem went.
I took it to my dealer who said with the light out the fault code could not be read and the only possible thing to do was replace parts and see if that solved the problem which was likely to be an expensive exercise in trial and error.
What can I do? Could I buy/hire the diagnostic equipment to plug in and get the error codes if it happens again - any ideas??