HDI Accelerator pedal sensor P0220 fault

[cully]

for info

my HDI has thrown a fault code P0220 =
Throttle/Pedal Position Sensor/Switch B Circuit Malfunction(EDC15C2-Track 1)

car drives fine just shows a permanent engine light

i was unable to reset the code with my scangauge which led me to believe i had
either..
faulty (APP) Accelerator pedal position sensor
or
faulty broken wire
so with wire diagram in hand i set to tracing wires

My ECU IS A 3 PLUG EDC15 C2

sensor pin1.....> IC02A pin9......>32VGR pinG3 ECU
sensor pin2.....> IC02A Pin10....>32VGR pinC2 ECU
sensor pin3...............................>32VNR pinC3 ECU
sensor pin4.....> IC02A pin21.....>32VGR pinH3 ECU

[attachment=13148]

after checking out continuity from sensor to chassis plug to ecu
i found no fault

so i assumed there was an issue with the APP sensor

I reset with the scangauge again no effect

so i broke out Peugeot plant software diag tool
plugged it in scanned showed the same fault
tested the sensor output found to be fine

so went for a reset with planet!

which cleared the fault!
strange!......

I'm guessing not all faults can be cleared by a generic code reader
but planet is more indepth

thoughts?