Service light - accelerator pedal faulty

[Matteovv]

Dear all, how are you? Few weeks ago my ds3 thp start showing the service light and then loose power and suddenly the accelerator pedal stops to work. I have checked wires, the throttle body and replaced the whole accelerator pedal and it is still there. Any clue on what is should be? It's intermittent, if I turn off the car and then turn it on again, the service fades away... But while driving it comes back! I really appreciate any help.

[Matteovv]

Just correcting typos as i cant edit. Dear all, how are you? Few weeks ago my ds3 thp start showing the service light and then lose power and suddenly the accelerator pedal stops to work. I have checked wires, the throttle body and replaced the whole accelerator pedal and it is still there. Any clue on what it should be? It's intermittent, if I turn off the car and then turn it on again, the service fades away... But while driving it comes back! I really appreciate any help.

[V3nn3tj3]

Does the pedal really stop working or is it just a loss of power ?

[Matteovv]

It does stop working! Not always, but if I keep driving with the service light, usually the pedal stop completely. I have no idea what to do. 

[V3nn3tj3]

Chances of having a pedal not working are slim. There are two sensors in it. Could be a loss of power due to high LTFT or sensor fault. Please read out car with 1 generic OBD reader. Only way we can help you forward.

[Chris_Blue]

yes- get a reader on the ECU see whats happening