How do I clear a penalty fare that has stopped my Snapper travel pass from working?
If you have incurred a penalty fare and your Snapper travel pass is no longer working just top up your Snapper for at least the amount of the overdue penalty fare and your travel pass will work again.
It's a really good idea to have some money loaded on your Snapper to cover one or two journeys on your regular commute. This is also handy in case your travel pass expires unexpectedly, and you still need to travel using your Snapper.
See also How do I clear an IOU?