toyota belta 1300cc.its give me check light on speedometer its acclrtr stop work on 2008 Toyota Yaris

what is the reason of above problem that accelartor stop working

Asked by for the 2008 Toyota Yaris
what is the code number??

it may be the fly by wire system malfunctioning. have it checked to verify

yar.... error against code will come that accelerator throttle pad doesnt work i go to, different mechanics and changed my acceleartr throttle pad even......but no positive response come...plz if u have info about such error and solution regarding this one then plz tell me