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My car model is bmw series 1 e87 n47 2009
I cleaned the intake manifold, air cooler, and air flow meter, and I refurbished the turbocharger, but after a week, the same error reappeared (during the error, the car no longer accelerates normally), although sometimes it goes away after 10 minutes of driving and returns to normal.
I have been to 3 mechanics. What could I do?