Ferrari have fitted new Control Electronics to both Sebastian Vettel and Charles Leclerc’s cars, ahead of the Chinese Grand Prix this weekend.
Leclerc looked set to take victory in Bahrain before he suffered from an engine issue during the closing stages – going on to finish P3 after a Safety Car saved him from the rapidly advancing Max Verstappen.
Ferrari later confirmed the issue to have been caused by a short circuit with an injection system control unit, something which the team claimed to have never encountered before.
The 21-year-old’s engine is fine to run in China this weekend, but he and team-mate Vettel, along with Haas’ Romain Grosjean and Kevin Magnussen have taken their second Control Electronics of the season.
They are one of six parts that form the power unit, and drivers are allowed only two of these per season before grid penalties are handed out.
Leclerc suffered further issues in FP2 as he missed a chunk of the session after a suspected engine cooling issue.
The problems ensured he finished down in P7, 0.8s behind Vettel.
Meanwhile, Honda have been forced to change the power unit in Daniil Kvyat’s Toro Rosso after detecting an anomaly in the data during FP1.
The change meant he was restricted to 20 laps in FP2, finishing P13.
It was the first in-season engine change for the Japanese manufacturer in 2019.