After changing the pedal position sensor it should be calibrated with Linde Service Guide software.
If it is out of calibration you could try starting the engine after moving the pedal up or down a little (single pedal) in different positions and starting it in each position to see it will drive. If you do find a spot where it works you could also bend the tab on the sensor to bring it into calibration when it starts with the pedal in the neutral position. This would be all guess work if you do not have access to LSG to see the voltage of the sensor.