How to fix LG dishwasher not starting?

To fix an LG dishwasher not starting, follow a systematic troubleshooting checklist that covers power, door, water, and control issues. First, check power: ensure the dishwasher is plugged in or hardwired, the circuit breaker in your electrical panel is not tripped, and if it is connected to a garbage disposal outlet, that outlet switch is on. Press Power and see if display lights up; if no lights, turn breaker off for 10 minutes to perform a hard reset, then turn back on. Second, check door latch: open and close the door firmly until you hear a click, ensure racks are not preventing closure and no utensils stick out, and inspect latch for food debris. Third, check child lock: if control lock light is on, press and hold Child Lock or Control Lock for 3 seconds to deactivate. Fourth, check water supply: ensure the water shutoff valve under the sink is fully open and the inlet hose filter is not clogged with sediment. Fifth, check for error codes: if OE blinks, clean filter and drain hose; if AE or LE blinks with water in base pan, soak up water with towels and check for leaks. Sixth, cancel current cycle by pressing and holding Start/Cancel for 3 seconds, then select a new cycle and press Start. If it still will not start, the thermal fuse, door switch, or main control board may have failed and require service.