Seat Ibiza Exhaust Noise and Error

I encountered a very similar problem with my Seat Ibiza, although I cannot recall the exact build year. The symptoms you describe, including the unusual exhaust noise and error codes, strongly suggest a fault within the exhaust system. More specifically, the flap actuator is the likely culprit. I would advise you to investigate the flap actuator, particularly the wiring and connections thereto. Is the actuator receiving the appropriate voltage? Are there any visible signs of damage, such as corrosion or cracking, on the actuator housing? Furthermore, examine the exhaust flaps themselves to ascertain whether they are physically obstructed. It is conceivable that debris has accumulated and is preventing proper operation. It is imperative to address this issue promptly, as a malfunctioning exhaust flap can negatively impact engine performance and fuel efficiency. Ignoring the problem could potentially lead to more severe and costly repairs in the future.

Thanks for the quick reply! When you say 'investigate the flap actuator,' what exactly am I looking for? I'm not super familiar with the technical details of the exhaust system. Is there a way to test the actuator itself?

You are most welcome. Allow me to elaborate. When I mention investigating the flap actuator, I am referring to a systematic examination of the device responsible for controlling the exhaust flaps. The actuator is typically a small electric motor or solenoid that receives signals from the engine control unit (ECU) to open or close the flaps. In my particular case, the actuator was indeed defective, and replacement proved to be the optimal solution. Given your admitted lack of familiarity with the exhaust system, I strongly recommend consulting a qualified mechanic. Attempting repairs without the requisite knowledge and tools could potentially exacerbate the problem or even cause damage to other components. A professional diagnosis will provide definitive confirmation of the issue and ensure that the repair is carried out correctly and safely.

Thanks for the detailed explanation and confirmation. I took it to a workshop, and you were spot on. The exhaust flap actuator was indeed defective. Cost me 190€, but the exhaust noise is gone, and the engine sounds normal again.