The proposed solution for the 1.6 litre engine involves a software update and the installation of what VW describes as a ‘flow transformer’, which will be located in front of the engine’s air mass sensor.
The transformer is designed to smooth the air flow towards the air mass sensor.
“This is a mesh that calms the swirled air flow in front of the air mass sensor and will thus decisively improve the measuring accuracy of the air mass sensor,” VW explained in a statement announcing the fix.
“The air mass sensor determines the current air mass throughput, which is a very important parameter for the engine management for an optimum combustion process.”
VW say the proposed fix is ‘relatively simple’, claiming it will take less than an hour to install and that it wont affect the power output of the engine or fuel efficiency, as was feared early on in the crisis.
For the two litre engine, it’s just a software update and will take around half an hour to complete, according to the VM.
The statement adds: “With these defined measures, technical solutions are already available for the majority of all Group models affected in Europe with EA 189 engines.
“At the end of this month, corresponding measures will be presented to the Federal Motor Transport Authority for the 1.2-litre 3-cylinder diesel engine as well.”
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