an unspecified impact level
Cause code ONA020
Plain-language explanation, impact details and live examples.
Last updated 21 May 2026, 17:06:11Resa till Upplands Väsby kräver SL-biljett
Announcement phrasing
Train operators typically phrase this cause as:
Resa till Upplands Väsby kräver SL-biljett
Live trains referencing ONA020
Snapshot of services that mentioned this cause during the past 90 minutes and the next 3 hours.
Updated 21 May 2026, 17:06
We can't find any current trains referencing this cause.
Frequently asked questions about cause code ONA020
What does cause code ONA020 mean?
Resa till Upplands Väsby kräver SL-biljett
How serious is cause code ONA020?
It is classified as an unspecified impact level.
Which trains are currently affected?
See the live examples above. The list refreshes every minute.