Ensure the internal turbo hardware isn't locking up the electrical components.

: The ECU locks engine RPMs and vehicle speed to prevent mechanical damage to the turbocharger and engine internals.

Modern Nissans have 10-20 different computers (modules). The Engine Computer (ECM), the Transmission Computer (TCM), and the Body Computer (BCM) need to share data constantly.

Disclaimer: This information is for educational purposes only. Always refer to a certified professional for vehicle repairs. If you'd like, I can: with a multimeter. Provide a diagram of the vacuum hose routing.

The code essentially means the ECM is sending a command but receiving "invalid or missing data" in return.

The electronic stepper motor bolted onto the turbocharger contains a mini circuit board. This board is subjected to extreme under-hood heat cycles and vibrations. Micro-solder cracks or burnt chips inside the actuator housing will instantly break the communication chain. 2. Damaged Wiring Harness or Corrosion