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Audi RS6 engine problems - instability and power loss

Hello colleagues! I have a 2017 Audi RS6 with a gasoline engine and 170,000 km mileage. I recently changed the spark plugs and ignition coils, and the car runs well, but when the engine is warm and I leave it for 15 minutes, when I start it, it starts to misfire, the check engine light flashes, and the engine runs as if on fewer cylinders. The TCE indicator also lights up. Mechanics suggest that it might be the fuel pump or a problem with the oil pressure sensors. If anyone has encountered a similar problem, please share your opinion and advice. Thank you in advance!

(Translated from Bulgarian)

A 2017 Audi RS6 with 170,000 km is experiencing engine misfires and power loss when warm, with the check engine light flashing and the TCE indicator lighting up. Initial suggestions include checking the fuel injectors, coolant temperature sensor, and crankshaft position sensor, as these components can cause misfires when faulty. The Mass Air Flow (MAF) sensor is also recommended for inspection and cleaning, as it can affect the air-fuel mixture and lead to similar issues.

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My mechanic says he suspects the oil pump. What do you think about that?

Check the condition of the crankshaft position sensor. A failing sensor can cause intermittent misfires and uneven running, especially when the engine is warm. If the sensor is faulty, it may not provide accurate readings to the engine control unit, leading to the issues you're experiencing. Let me know if this helps or if you have any other questions!

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AUDI

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RS6