Sa-16-dtc-p004607 Here

: If you replace or even just remove and reinstall the actuator, it must be calibrated using a scanner to ensure the ECU knows the exact position of the vanes.

: The actuator is physically blocked from moving the turbo vanes, often due to heavy soot accumulation or internal mechanical binding. sa-16-dtc-p004607

: The truck may be unable to initiate a parked Diesel Particulate Filter (DPF) regeneration, or it may enter a continuous, never-ending regen cycle. : If you replace or even just remove

: Inspect the dedicated engine compartment fuses (commonly FE8 or FE9 ) to see if the actuator has shorted out. : Inspect the dedicated engine compartment fuses (commonly

: The engine will likely lose significant power as the ECU limits torque to protect the engine.

The code is a specific diagnostic fault typically found in Volvo and Mack trucks (specifically those with D11, D13, or MP8 engines) indicating a Variable Geometry Turbocharger (VGT) mechanical fault . Code Breakdown

Are you experiencing a or a "Regen Required" message on your dash right now? Volvo D13 Turbo Actuator Failure Caused by Fuel Filter?