Jeta Life
Veteran Member
Another great one from a smart VW fan in Idaho, we're all just couch potatoes, get those stupid popcorn posts out of this thread. Chips man chips, with beer.Or maybe, they turn on the emission's sensors during a test to trigger a code for a defective sensor. Including running the Adblue Pump.
I'm calling BS on the EPA claims because of how these systems function. You have active and passive systems unlike a gasoline engine where all systems are active.
Passive systems include Low Pressure EGR, AdBlue injection etc where they will cycle based on certain engine output conditions.
It makes sense to activate everything during a systems check-out to determine if all passive systems are functioning correctly.
With that in mind, Im calling Bull**** to the EPA.
Note that they are focused on NOx output, meaning some Bureaucrat thinks that the AdBlue pump runs non-stop which is not the case! Somebody noted that the pump activated during the test and they are claiming its an emissions defeat.
The fact is the NOx sensors determine the activation of the system in normal running conditions and the catalyst after being dosed is effective for sometime after to insure conversion of NOx. And FWIW, the NOx sensors are always active to determine cycle times of the SCR systems.