Romain Grosjean will have to start from the pitlane for the Mexican Grand Prix following a change of floor ahead of the race.
The Frenchman had a difficult time in qualifying, ending up slowest overall and struggling for an explanation as to why his Haas car had been so slow.
"I really don't know what's happening," he said. "The car was good in FP1 and it was alright on the first run this morning in FP3, but after that it's just gone nowhere.
"We really need to try to analyse what's going on as something is clearly not going right. Last on the grid is unacceptable for us.
"Top speed has been fine, but there's no grip and no balance. You can manage poor grip and drive around it if you've got a balanced car, but combined, there's just nothing you can do."
Following examination of the car, Haas elected to change the floor for a new specification, which is a breach of parc ferme rules and will result in a pitlane start.
A note from F1 technical delegate Jo Bauer said: "As the replacement part is different from the one originally used, this is not in compliance with Article 34.2 of the 2016 Formula One Sporting Regulations and I am referring this matter to the stewards for their consideration."