Weird problem , engine stalled again.

[Pongsak X5]

Hello everybody here, I'm using x5 3.0i auto 2001 115,000 km on board.
The engine's stalled at very low speed without any sign before.
No splutter ,no shaking, gasoline > 50 L.Everything 's fine just power came out.

I can start it again and suddenly without any problems.
No service light indicator show.

It's happened twice , about 4-500 km used apart and every condition's same.

I go to the bmw shop and use obdII to scan and it show no error.



I've search the forum for engine stalled and have data for
CPS, MAF but these defects 've error codes, right?

Can anyone suggest me what can be the causes?, please.