VGT actuator faults paccar mx13 epa13

[Nerv]

Thank you all this helped, removed actuator, noticed that turbo was sticking, managed to free it. Opened exhaust side and cleaned up well, no play or damage otherwise. Did actuator test passed. Assembled, no more derate. Mine was rusty like that as well, cleaned it up. Canadian weather i tell ya, they use the liquid brine stuff over here it eats away at everything, i wash weekly and it still rusts everything in sight. Thanks guys, lots of drivers love to idle low i hate it and definitely is the cause of the carbon buildup.