Could Ricciardo be disqualified?

After the Australian GP had finished the FIA announced that they were investigating the Red Bull of Daniel Ricciardo.

The FIA investigation is regarding a fuel flow issue on the car saying it “has exceeded consistently the maximum allowed fuel flow of 100kg/h”. If the FIA find Red Bull guilty, they will be disqualified from the race results and Ricciardo will be stripped of his second place finish. Thus handing it to Magnussen and promoting Button to third place.