Code 2385 help

[DCtruckin]

CM870 code 2385 has 81 counts. VGT actuator driver circuit- Voltage above normal, or shorted to high source. Within the last 1 1/2 years it’s got a new engine harness, oem reman VGT, and VGT control box, with new air line going to the box, box to turbo also. What am I missing?. Also when cold the actuator “cycles” let’s call it. The actuator will slowly extend and contract, only when it’s cold though. Once it’s warmed up it’s good.