temp reading raise but ECT sensor drop ???

[bl4ckclio]

****** UPDATED *******

today I decide go to peugeot shop.
plug the PP2000..and guess what happen? on they laptop my engine coolant show the real.
when temp gauge on 90c........engine coolant show the same.

so what's wrong?
my PP2000 is a clone version, cheap chinese copy.
so not 100% accurate.

cheers for everyone.

[steve_earwig]

That's a bit unnerving for everyone else with a clone pp I guess you've eliminated the temperature sensor but are still no closer to finding why your car only does 17l/100km