What causes the particulate filter blockage in Audi Q3?

1 Answers
TaylorRose
07/29/25 8:15pm
Audi Q3 particulate filter blockage reasons are as follows: The GPF can capture particles beyond the three-way catalytic converter, so after prolonged driving, a large number of tiny particles accumulate on the GPF, leading to blockage over time. Additionally, prolonged engine idling and stop-and-go city driving conditions can also cause GPF blockage. This is because the GPF operates at lower temperatures in these scenarios, preventing effective regeneration, thus creating a vicious cycle. The methods for handling particulate filter blockage differ between diesel and gasoline vehicles, as detailed below: For diesel vehicles, simply press the regeneration button in the car. The engine will then increase its RPM while stationary, typically taking about ten minutes to clean the particulate filter, resolving the blockage issue. For gasoline vehicles, the owner should first shift the car into S mode and then drive at high speed for a period. During high-speed driving, the exhaust pipe temperature rises, burning off the clogged particles in the particulate filter, thereby solving the blockage problem. If the particulate filter blockage is particularly severe and the above methods fail to resolve it, the particulate filter can be sent to a car repair shop or 4S store for professional cleaning with specialized equipment.
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