The Volkswagen Group has proposed the specific technical fixes for the non-compliant 1.6-liter and 2.0-liter diesel EA 189 engines equipped with the software defeat device resulting in excessive NOx emissions to the German Federal Motor Transport Authority (Kraftfahrtbundesamt, KBA). Following an examination, these measures have been ratified by the KBA.
For the 1.6-liter diesel, a “flow straightener” will be fitted directly in front of the air mass sensor. This mesh will calm the swirled air flow in front of the air mass sensor and thus improving the measuring accuracy of the air mass sensor. The air mass sensor determines the current air mass throughput—a very important parameter for the engine management for an optimum combustion process. In addition, a software update will be performed on this engine. The time needed for the implementation of the technical measures is expected to be less than one hour.
The 2.0 liter engines will get a software update. The pure labor time for this measure will be around half an hour.
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