Hi Folks

I have a '98 Passat.

Recently I was attempting to overtake a lorry at about 70mph when I suffered a loss of power and had to stop.

At the time a warning light showing the letters EFS appeared which I have never seen before and which do not appear at ignition.

Stopped the car and switched off. Waited a couple of minutes and restarted engine. No problems for the next twenty miles home. Warning light no longer showing.

What is EFS?
Should I be worried?
Should I go straight to dealer without passing Go?

Thanks