APRILIA Tuono V4 1100 Factory Service Station Manual page 250

Electrical system
With faulty sensor, the component inside the control unit is damaged and replacement of the control
unit is recommended. With signal not valid, the sensor has generated a signal out of range that is still
sent to the injection control unit together with the relevant error.
NOTE: The instrument panel does not indicate the presence of this error even in the ATT status.
NOTE
THIS ERROR DISABLES THE TRACTION CONTROL.
P1905 Wheel stand timeout error
Functional diagnosis:
Timeout error
Error cause:
•
If this error is displayed, it means that the wheel stand control software detected an abnormal
behaviour of the motorcycle.
Troubleshooting:
With faulty sensor, the component inside the control unit is damaged and replacement of the control
unit is recommended. With signal not valid, the sensor has generated a signal out of range that is still
sent to the injection control unit together with the relevant error.
NOTE: The instrument panel does not indicate the presence of this error even in the ATT status.
NOTE
THIS ERROR DISABLES THE TRACTION CONTROL.
Connectors
ELE SYS - 250
Tuono V4 1100 Factory