This morning my daughters 2014 Panda Lounge (1.2 petrol) displayed an engine management fault on the dash display. Despite a couple of restarts I was unable to clear the light.

Fortunately I have the multiecuscan package which I used to ascertain that were 2 fault codes which related to the atmospheric pressure sensor and to an inlet manifold sensor fault (sorry, I forgot to note down the codes).

After a bit of head scratching I discovered that the fault codes seem to have been induced by me leaving the fuel filler cap fractionally open after I had refuelled the car earlier - Dohhh! Having now closed the cap properly and cleared the faults using my laptop everything subsequently seems fine.

So the moral of the story is: remember to fully close your fuel cap properly (assuming the fault doesn't return of course!).

That's interesting and an entirely plausible analysis of the issue I think. The previous Model-169 Panda 1.2 used a 'dead-head' fuel-injection system, which meant that the fuel rail had no return to the tank, just to the 4 injectors. In that car it would never have worried (or indeed known) if the cap was left off.

This suggests that the 312 Panda 1.2 uses a more traditional 2-way return setup, so tank pressure is more important and needs to be monitored.

You're in good company though - the Ford GT of circa 2005 was notorious for throwing engine lights even at the smell of spilt fuel around the fuel cap, such are the Californian EPA rules on this sort of environmental pollution scandal.....!