As far as I know ECU will get error only in case the electric engine which controls "master" swirl flap on cylinder 3 gets faulty or blocked (because there is detection of position built in there (at least this was the case with alu manifolds)). Any other option for error is when it is already too late, when swirl flap get into cylinder, damaged someting enough so some sensors/ECU treat engine behaviour as faulty.
when the car connected ecu, there was an error code , now i couldn't remember the code ,maybe p2001 maybe it is not. the service man was too fast for deleting
language of the programme was turkish and it is too hard to understand the mean of code because of terrible translate. i think it was about inlet manifold or egr valve.
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