Engine and charge lights are on and the engine is in limp mode.

Just had the engine rebuilt. The problem has been present since the engine rebuild.

I have worked out that the turbo is controlled by an actuator on the turbo, there is no boost control solenoid. I have disconnected the plug and checked voltages. There is battery voltage on two and about 3v on the third wire when disconnected codes clear and the alternator light goes out.

I have removed the turbo. I suspect the turbo actuator is faulty but I don't know how to confirm this.