Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I’m sorry to hear you're having trouble with your vehicle.
If your A4 Quattro won't start and you've already replaced the crankshaft position sensor and diverter valve, but the issue persists, there might be a few other things to consider. The P0016 code indicates that the engine's crankshaft and camshafts are not moving in sync. This may be caused by issues with engine timing components and can prevent the engine from starting properly. The P0299 code suggests a turbocharger underboost condition, which might not directly prevent starting but could affect performance. The timing concern and the underboost condition could both contribute to the lack of power and sluggish operation of the car. Due to the complexity of these systems, it may be best to consult a trusted repair shop for a full diagnosis.
If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!
