It says

The Motor Control Unit senses a suds lock condition by analyzing the current draw on the drive motor. If "Sud" is displayed a potential Suds Lock is detected. This may signify a bad pump, an extra heavy load, excessive detergent, or excessive suds.

Possible Causes / Procedure

• If too much detergent was used:
- Run the unit through a Rinse/Spin cycle.
- Run a Normal cycle without adding any detergent.

This should clear the unit of the excess detergent.

1. Check the drain hose and make sure it is not plugged or kinked.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the drain pump, pressure switch, and Central Control Unit (CCU).
4. Check/clean drain pump filter of foreign objects.
5. Plug in washer or reconnect power.
6. Check drain pump.
7. Check the pressure switch.
8. Verify CCU operation by running a Diagnostic test or any cycle.

(If the suds error code continues to illuminate after the above inspections are preformed, replace the pump.)