Dash lights comes up

Ford Fiesta 2012 Hatch, 1.6, zetec 150000 miles
Those lights comes up in no specific time, when they did, comes up 3 times and the last time stays up until switch off the car. The car still works perfectly. What exactly is the problem? I think it’s just a sensors fault. Can I fix it by myself?
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Konstantinos from Australia a year ago  
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