888 Minor Easy DIY

GE Dishwasher 888 — Display Self-Test / Demo

GE Dishwasher · Error code 888

What 888 Means

All segments lit ('888' or all icons on) is normally a display self-test at power-up. If it stays on, the unit may be in showroom/demo mode or the user-interface board has failed.

Symptoms

  • All segments stay lit on display
  • Buttons don't respond
  • Cycle won't start

Common Causes

1
Showroom/demo mode enabled

Floor-model demo mode never turned off after delivery.

2
UI board fault

Console electronics failed and all outputs are stuck on.

3
Ribbon cable to UI loose

Cable between control and console partially unseated.

How to Fix It

  1. Power-cycle at the breaker for 1 minute, restore power, and watch the boot-up self-test (~5 seconds is normal).
  2. Consult the model's Owner's Manual for the demo-mode exit sequence (often Heated Dry + Start held 5 seconds).
  3. If the display stays solid, remove the inner door panel and reseat the ribbon cable between the UI and main control.
  4. Replace the UI/console board if buttons still don't respond.

More GE Dishwasher Codes

1h 1h — Delay Start Active C1 C1 Error — Slow Drain (Over 2 Minutes) C2 C2 Error — Drain Cycle Too Long (Over 7 Minutes) C4 C4 — Turbidity / Wash Pump Fault C5 C5 — Heater / Heat Fault C7 C7 — Water Temperature Sensor (Thermistor) Fault

All GE codes → All dishwasher codes →

Verified against manufacturer documentation: geappliances.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.