Ferrari has revealed its findings after investigating the failure of Charles Leclerc's power unit that robbed him of likely victory in Sunday's Spanish Grand Prix.
Leclerc was comfortably in control of the race at Barcelona's Circuit de Catalunya when he suddenly felt a loss of power on lap 27 that forced him back to the garage and immediate retirement.
Ferrari team principal Mattia Binotto confirmed after the race the Scuderia would send the system back to Maranello for it to be immediately disassembled in the hope of finding a cause.
A Ferrari statement read: "Having examined the PU from Leclerc’s car, we found the turbo and MGU-H are damaged and cannot be repaired.
"However, having fully analysed the failure and its cause, we are satisfied it did not occur through a design fault or reliability issue with these two components or any other elements of the PU."
It is clear the root cause has not been formally discovered, and rather Ferrari has simply ruled out possible concerns of its own making regarding design and reliability.
The upshot is Leclerc will now be on the limit for those two elements of the power unit going forward for the rest of the season as he now heads to the Monaco Grand Prix this weekend.
Ahead of the race, Leclerc had used two of each of the internal combustion engine, turbocharger, MGU-H and MGU-K.