Sebastian Vettel survived a scare after winning Sunday’s Malaysian grand prix.
The German, who was leading before technical defects hit in Bahrain and Melbourne, was summoned by the stewards after the Sepang race.
During Sunday’s race, the 22-year-old passed Lotus’ Jarno Trulli while yellow flags were waving, and a stewards report said Vettel "did breach the international sporting code".
But the stewards, including former grand prix winner Johnny Herbert, said the Red Bull slowed down in the yellow flag area, and noted that Trulli at the time had "an obvious problem".
They did not impose a penalty.