I have a '99 Xantia HDI 110 with a problem.

The car starts and runs normally with no fault lights at any time.
If driven quite moderately the fault never occurs , but , if the engine
is used hard or has to rev over 3000 rpm or so for more than a very
short time the fault occurs. The engine will run ok upto about 2000 rpm
but then feels like there is a limiter on it. It will rev over this if
given time ,but is very slow to increase revs.

If the engine is turned off then on again the fault is cleared and the
car drives normally.

I was wondering if the service indicator has anything to do with this
as a sort of safeguard for a car that has gone over the service
interval. The service indicator was at zero when I bought the car , and
, due to this group I discovered how to reset it !  Haven't driven it
since then though.

Any help appreciated.