LG Dishwasher Error Code CE

LG Dishwasher CE Error: What It Means and How It Impacts You

The CE error on an LG dishwasher typically signals a control or communication fault between electronic components — most commonly the main control board and the user interface/touchpad, or a problem with sensor feedback. When the dishwasher displays CE it may stop mid-cycle, refuse to start, or lock controls. Common user impacts include longer or incomplete cycles, no heating or drying, unusual noises, intermittent operation, and in some cases increased safety risk from electrical shorts or overheating if the fault is due to a failed component. Addressing CE promptly reduces the chance of water damage, fire risk from burning electronics, or further damage that leads to a costly board replacement.

Common Causes

• Faulty main control board (PCB) or burned/failed components on the board.
• Defective or shorted user control panel / touchpad.
• Loose, corroded, or damaged wiring harness or connectors between modules.
• Door latch or door switch failure causing the control to register an error.
• Faulty temperature sensor (thermistor) or thermal fuse affecting control logic.
• Power supply issues: voltage spikes, poor grounding, or intermittent mains power.
• Moisture intrusion into the control panel or electronics causing shorts.
• Malfunctioning pump/motor causing unexpected load or feedback errors.

Troubleshooting Steps

1. Power reset: Turn off power at the circuit breaker or unplug the dishwasher for 5–10 minutes, then restore power. A reset can clear transient communication faults.
2. Check error history: If your model supports diagnostics, run the service/test mode to read stored fault codes and confirm CE origin.
3. Inspect the control panel: Look for stuck buttons, moisture, corrosion, or visible damage. Dry the panel and avoid spraying water directly on it.
4. Examine wiring and connectors: With power off, open the access panel and check connectors between the touchpad and main PCB for loose connections, broken pins, or corrosion. Reseat connectors securely.
5. Verify door latch/switch operation: Ensure the door closes firmly and the latch switch actuates. A failed door switch can trigger control errors.
6. Check for visible PCB damage: Look for burn marks, bulging capacitors, or cracked solder joints on the main board. If present, replace the PCB.
7. Measure voltage (advanced): If comfortable and trained, verify proper incoming voltage and 12V/5V supplies on the board with a multimeter. Do not perform if unsure.
8. Swap suspected modules: If you have access to replacement parts or a technician, swap the user control panel or main board to isolate the faulty module.
9. Dry out moisture: If water has entered electronics, allow full drying (24–48 hours) or use gentle warm air. Replace components if corrosion is evident.
10. Call support: If CE persists after basic checks, contact LG support or a certified appliance technician to avoid risk and ensure correct PCB/module replacement.

Maintenance / Prevention Tips

• Keep the control panel dry — wipe spills immediately and avoid direct spray from hoses.
• Use a properly grounded outlet and avoid running the dishwasher on a damaged or overloaded circuit.
• Install a surge protector or whole-home surge protection to reduce risk from voltage spikes.
• Inspect door hinges and latch periodically to ensure a secure door closure.
• Run a cleaning cycle monthly to remove debris and prevent flooding of the electronics from leaks.
• Avoid overloading the racks, which can stress motors and pumps and create unexpected loads.
• Check hoses and clamps regularly for leaks that could reach the control area.
• Keep the area under and around the dishwasher clean and dry to prevent moisture migration into the chassis.
• Use manufacturer-recommended detergent and rinse agents to avoid residue buildup on sensors.
• If you live in a hard-water area, use water softening or descaling to reduce mineral buildup on sensors and heating elements.
• Schedule professional maintenance every 1–2 years if you rely heavily on your dishwasher.
• Avoid DIY PCB repairs unless certified; replace boards with OEM parts when needed.
• When moving the dishwasher, protect the control panel and internal wiring from strain or pinching.
• Keep firmware updated when LG publishes updates for network-connected models (through authorized service).

FAQ

Conclusion / Safety Notice

If you encounter a persistent CE error, prioritize safety: disconnect power before accessing internal components, avoid DIY repairs involving live circuits, and never operate the dishwasher if it shows signs of burning, smoke, or heavy arcing. Replace damaged wiring or boards rather than patching, and use OEM replacement parts where possible to maintain safety and reliability.

For simple issues like resets, loose connectors, or a wet control panel you can follow the troubleshooting steps above. For suspected PCB failure, burnt components, or if you are not comfortable with electrical diagnostics, contact an authorized LG technician or a qualified appliance repair professional to diagnose and repair the CE error safely.