Manual or auto? The neutral position switch and clutch switch are two reasonably common problems in the manual version.
The clutch switch has some adjustment to it, alternatively some have glued a small tab onto it to to make sure it activates with the clutch out.
Neutral position switch can be tested by holding the gear lever to the right while trying to set it (once you’ve ensured the clutch switch is OK). If it will set in 6th gear holding the gearstick right and cancels when you let it go, replace the switch.