LG dishwashers can refuse to start because Control Lock is enabled, the door switch is not seeing a closed door, or the touch panel has not accepted the command.
Safety first: Unplug the appliance before touching accessible hoses, filters, or panels. Do not bypass a door or lid switch, probe live wiring, or continue using an appliance with smoke, a burning smell, sparking, a hot plug, repeated breaker trips, or water near electrical parts.
Most Likely Causes
1. Control Lock is enabled
LG displays can provide a lock or delay clue.
2. The door is not closing against the latch
Remove rack interference before attempting another cycle.
3. A touch-control command was not accepted
A recurring fault should be diagnosed rather than bypassed.
4. Power is missing
LG displays can provide a lock or delay clue.
5. Delay Start is active
Remove rack interference before attempting another cycle.
6. A control or latch fault
A recurring fault should be diagnosed rather than bypassed.
Step-by-Step Diagnosis
Step 1: Read CL or lock indicators
Follow the model-specific panel legend.
Step 2: Choose a normal cycle
Do not force the door closed.
Step 3: Close the door until it clicks
Let the appliance complete one normal retry.
Step 4: Check breaker or GFCI
Follow the model-specific panel legend.
Step 5: Confirm water is on
Do not force the door closed.
Step 6: Reset power briefly
Let the appliance complete one normal retry.
Components Related to This Symptom
A qualified technician may inspect the door-latch assembly, capacitive user interface, main PCB, inlet valve, and harness. The symptom alone does not confirm a failed part.
When to Call a Professional
Book service if the safe checks do not solve the problem, a code or symptom returns, or the repair requires meter testing, internal wiring access, appliance removal, or disassembly. Stop immediately for burning odor, sparks, hot wiring, breaker trips, or water near electrical parts.
Related Troubleshooting Guides
Dishwasher not draining, Washer not spinning, and Refrigerator not cooling.
Frequently Asked Questions
What does CL mean?
It normally indicates Control Lock.
Why are lights on but no cycle starts?
A latch, delay, or control-panel issue can prevent startup.
Bottom Line
Start with the safe external checks, follow the guide for your exact model, and avoid guessing at internal components.