It may be just an adjustment but here is what the E2 means:

The E2 error code indicates the console is not receiving a signal from the speed sensor on the back of the motor. Since the motor is not turning, there will be no signal from the sensor.

Since the treadmill was working before the move, I suspect a connector is not connected good. Sometimes the wires in the connector will back up and not make contact. Check all the wire connectors first.

If the wire connectors are ok, the console, power board, motor controller or the motor can cause the problem. The wiring harness between the console and power board can also have a broken wire.

I am sending you a voltage diagram of your treadmill. If you are not completely comfortable making voltage checks please call and schedule a technician to diagnose and repair the treadmill. Since the console lights up your power to the treadmill is ok. The only way to tell where the problem is, is to check the voltage to the various components.

To make the voltage checks you need to put the treadmill in the calibration mode. To do this hold the speed up and stop keys in as you insert the key then let the keys go. The console should start lighting the different led's. Press the stop key twice and you will be in the speed and incline calibration. Run the speed up to 10 mph. Leave the console in this position while you make the voltage checks.

On the 8 wire harness on the back of the console use either black wire as ground and with the treadmill on and key still in between black and the blue pwm wire you should have around 1.5 volts dc.

If you don't have this voltage the console is bad. If you have the voltage go to the power board under the hood of the treadmill and check the same 2 wires for the same voltage. If you don't have the voltage here the harness between the console and power board is bad.

If you have the voltage going into the power board, go to the motor controller and check between the red and black and then the white and black. The voltages are on the images I sent. If you don't have these voltages the power board is bad. If you do have the voltages the motor controller is bad.