What does error code p1792 and p1793 for a honda fit 2004 mean? What problem does this point to and possible solution?

Automatic transmission problem. P1792 indicates transmission's lock-up clutch is not engaging. The problem may be related to the Engine Coolant Temperaure (ECT) Sensor circuit. An electrical fault (open circuit) has been detected in the ECT circuit. Fault could be damaged wiring, disconnected connector, damaged connector, or faulty ECT Sensor.

Remember to change the fluid every 30,000 miles.