Turbo Pressure Diverter Valve Diaphragm Torn on Audi A3
Problem overview
The Audi A3 2.0T FSI and Audi A3 2.0TFSI engine looses power if the turbocharging system has a leak. The most common turbo boost leak is a torn rubber diaphragm on the diverter valve, which is intended to open only if pressure gets too high. Common symptoms are increased turbo noise when letting off of the gas pedal, power loss, and engine code P0234.
If there is a turbocharging system leak, the system will need to be inspected, and the defective seals and/or valve will require replacement.
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