Your LG dishwasher displaying a bE code, typically associated with leveling issues or using incorrect detergent, presents a more complex problem since you've already addressed these usual causes. You've confirmed the use of the correct detergent without any soap suds residue and ensured that the dishwasher is properly leveled, yet the error code continues to appear.
Given these steps, it's worth considering other potential issues. The bE code might be a result of a malfunction in the sensor or control panel, where electronic components can sometimes give false readings due to glitches or faults. It's also important to ensure that there are no issues with the water supply or drainage system, as problems in these areas can sometimes trigger error codes unrelated to their direct functions.
Checking the electrical connections within the dishwasher is also a good step, as loose or faulty wiring can lead to various error codes. Additionally, resetting the dishwasher can clear error codes caused by temporary software glitches. This can be done by unplugging the dishwasher for a few minutes and then plugging it back in.
If these suggestions don't resolve the issue, consulting the dishwasher's manual for specific troubleshooting steps related to the bE code could provide further insights. If the manual doesn't help, contacting LG's customer support might be beneficial.