The Renault driver used his fresher tyres to make up positions late in the race, but left the track at turn 12 when passing Kvyat for 11th place.
He has since been hit with a five second time penalty, dropping him to 12th, after it was deemed that he had gained an unfair advantage.
"Car 20 left the track in turn 12, gaining a lasting advantage," a statement from the stewards read.
Bahrain International Circuit - Winter testing
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