based on the information i could scrape up my bet is on the GE SX (SEM) controller.
the only one i could find this code on
it is a hydraulic code
-143 Pump Controller motor current sensor input is too low.

This status code is displayed when the voltage at the
current sensor is greater than 0.1 volts with no current
flowing in the motor circuit.

In Corrective Actions of the code manual it says:
SYMPTOM
No power to pump motor in
control range.
POSSIBLE CAUSE
Control is defective.

Replace controller unit.


Now, from my personal experience with these controllers rule out everything else before you blame the controller.

- Check the main line fuse on pump controller buss
- Make sure all connections between the controller and the pump are good, not burned or loose.
- Check the motor and make sure all circuits have continuity, an open field or commutator circuit can cause this.
- and ALWAYS check your battery and make sure its charged to a decent level before you start diagnosing.

If you want all the codes for the SX controller you can find them at FSIP.biz (flight systems website)