I've had this light come on for a second or so when driving, there is no related reason nor any noticeable loss of power or issues when this happens; the light just blips on and off a couple of times and then never again until about a week later.

The car is up to date with all maintenance and I'm religious about services. I'm having problems finding a mechanic that has the (Peugeot peopietary, non-OBD) reader and I don't want to do exploratory surgery on the engine.

Any ideas as to what it might be with this limited information or is taking it apart the only option.

I could buy the Lexia3 reader from a number of UK shops, it's not that expensive (90 £), but shipping is like 300 and there's no guarantee it'll work.

Don't know what to do so any ideas are appreciated.