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Hi there! My name is XXXXX XXXXX I would like to try and help you resolve your problem! Hopefully, together, we can get to the bottom of this ! I willtry and look up the meaning of your codes for you !
pid 411-Recirculated Engine Exhaust Gas Differential Pressure
Can't seem to find the rest of the code ! Can you write down exactly what you are seeing on display ? I believe there should be an FMI code as well?
411-is recirculated engine exhaust gas differential pressure ! But that is only part of the fault code ! You should have an FMI number! (fault mode indicator) This number tells us what exactly is wrong with the recirculated engine exhaust gas differential pressure!
You may have a sensor that is out of range ! May need to replace the sensor !
411 fmi 0 means egr delta pressure high
This is the sensor mounted just above the turbo with 2 small metal tubes that connect to it . I will try and find some diagnostic steps for you if you like!