Citroen Xsara Picasso 1.6i engine light

[andrej_citroen]

I drive Citroen Xsara Picasso 1.6i 109 hp. It was producced in 2007 and it has got about 120 000 km.
Today I started engine and engine light appeard and motor wasnt running properly. After one kilometer I stopped the car and turn it off. Then I started it again and the engine light disappeared. The engine works now. But I was wondering what was wrong ?

[myglaren]

Frenchness?

Probably just a glitch somewhere that will never be repaeated, these sometimes caused by low battery voltage.
The only sure way to find out is to interrogate the system with a Lexia but it could be buried among dozens of spurious error codes that you will really never know unless it is repeated.

[andrej_citroen]

Then it is accumulator, because it is still first, original from beginning.