Toro Rosso is in hot water with the Silverstone stewards having been summoned for an alleged breach of Article 12.1.1.b of the Sporting Code, which deems it is an offence to enter a car which is known to ineligible to race.
The move follows scrutineering earlier today when a request was made to the Faenza team to replace a damaged wheel tether on Carlos Sainz' car, with which the team refused to comply.
A subsequent note from the FIA technical department stated: "During initial scrutineering car number 55 was found to have a damaged wheel tether. The scrutineers made the team Scuderia Toro Rosso aware of this and asked the team to replace it.
"The team refused to follow the instructions of the scrutineers and therefore the technical delegate checked the damaged tether himself and found that the tether was not only damaged but also several cut fibres were knotted together.
"Therefore the team was aware of the damaged tether and presented the car in an unsafe condition for scrutineering."