Was driving earlier and as i accelerated the engine cut out. i managed to coast to a lay-by but power steering wasn't working as the engine wasn't on. This happened twice afterwards, both times as the turbo spooled. I had a quick look over the engine bay and everything *looks* fine, no leaks visible, all pipes and wires look ok, temperature sitting on 90. Scanned it and no fault codes. After the scan the car started and drove fine again. It just felt like the car had stalled. Any idea of possible causes?