CE Serious Moderate DIY

LG Dishwasher CE — Motor / communication error

LG Dishwasher · Error code CE

What CE Means

On many LG dishwashers CE is grouped with LE and means the main board has lost feedback from the wash motor; on some recent models CE means the main PCB and sub PCB have lost communication.

Symptoms

  • CE shown shortly after start
  • Cycle aborts
  • No wash sound
  • Display freezes or flickers

Common Causes

1
Loose ribbon / harness between PCBs

Communication cable between main and sub board unseated.

2
Motor feedback fault

Same root cause as LE on shared firmware.

3
Moisture in a control connector

Steam intrusion at the door latch or top trim corrodes pins.

4
Failed sub PCB (display/UI board)

User-interface board no longer responds to main PCB.

5
Failed main PCB

Driver IC failure preventing motor command.

How to Fix It

  1. Cycle power at the breaker for 2 minutes.
  2. Open the door, remove the inner door trim screws, and inspect the UI ribbon connector.
  3. Reseat both ends of the communication cable; look for corrosion or melted pins.
  4. If CE returns, swap or replace the UI (sub) PCB first — it is the cheaper part.
  5. If CE persists with a known-good UI, replace the main PCB.
  6. Verify ground continuity to the dishwasher chassis at the power cord.
  7. Confirm the unit is on a dedicated 15 A circuit per LG spec.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement LG dishwasher UI / sub PCB View on Amazon→ Common replacement LG dishwasher main control board View on Amazon→

More LG Dishwasher Codes

2H 2H — Delay-start indicator (2 hours remaining) AE AE — Leak Detected (Aqua Error) bE bE — Bubble / oversuds error CL CL — Child lock / control lock active CR CR — Test / calibration mode E1 E1 — Leak detected (newer display label)

All LG codes → All dishwasher codes →

Verified against manufacturer documentation: lg.com

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