Christian Horner admits Red Bull could be facing a similar fuel flow situation to Australia at this weekend's Malaysian Grand Prix.

Daniel Ricciardo was disqualified from the race in Melbourne for consistently exceeding the maximum permitted fuel flow rate, despite Red Bull arguing that the FIA-homologated sensor reading was faulty and opting to trust its own readings. Ricciardo's sensor failed again during practice in Malaysia, and Horner admitted the team's belief in its appeal case could force it to react in the same way if the situation arises again this weekend.

"We had a signal failure on Daniel's car this morning immediately, so we obviously have replaced that for this afternoon's session - I haven't had the results of that yet," Horner said. "Hopefully it is reading as per the fuel rail and will behave for the rest of the weekend.

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"If it doesn't then we find ourselves in an awkward situation but it's one we obviously will try and work with the FIA with, but again you're then faced with the same dilemma as Australia a couple of weeks ago."

Asked whether he would do the same as Australia if face with a similar situation in Malaysia, Horner replied: "Firstly we need a sensor that is consistent with the fuel rail; that's the most important factor. Thereafter we will have to make the judgement in the race depending on what the sensor is saying. If it's 0.25%, you can live with it, if it's 2% then you can't live with it. It depends on what the value is..."

However, Horner did add that he hopes to have an agreed plan with the FIA ahead of this weekend's race if a problem were to arise.

"I think we'll have the conversation with Charlie [Whiting] beforehand so that it will be clear if we do see a variance: 'Right, what are we going to do?' Hopefully we can agree something that is sensible."

Horner also said that Red Bull's appeal case and approach this weekend was based on the fact that the FIA's guidance on the matter came via technical directive, which holds no regulatory value. Whiting - as head of the F1 technical department - agreed that directive was an opinion, but said teams usually followed them as rules.

"Fundamentally the technical directives are opinions - they always have been - given by the technical department to teams," Whiting said. "Normally they're happy to follow that, but it's always been very, very clear that they can be contested in front of the stewards.

"For nearly 20 years it's been like that and they have been contested probably five times. So it's right to say that they are not regulations, but they are there as an opinion of a technical department and that is how most teams feel that the sport is run. But it can be contested in front of the stewards..."