Sa-16-dtc-p004607 -

: Use a diagnostic tool like Volvo Premium Tech Tool to run a "VGT Function Test." This will attempt to move the actuator through its full range of motion to see if it binds.

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

: A sub-fault identifier indicating a mechanical failure (specifically that the actuator is unable to move the VGT vanes). Key Informative Features & Symptoms sa-16-dtc-p004607

: 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.

: Inspect the dedicated engine compartment fuses (commonly FE8 or FE9 ) to see if the actuator has shorted out. : Use a diagnostic tool like Volvo Premium

: Refers to Source Address 16 , which identifies the Engine Electronic Control Unit (ECU) as the source of the fault.

: In some cases, this code is triggered because coolant or water has leaked into the electrical side of the turbo actuator, often signaled by a blown fuse (FE8 or FE9). Recommended Troubleshooting Steps Key Informative Features & Symptoms : If you

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