An Appliantologist in the forums ran into a bE error on an LG dishwasher, which perplexed him. In his words:

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ANYBODY RUN INTO THIS ISSUE ON LG DISHWASHER .. BE ERROR CODE.  BUBBLE ERROR .. ?   CUSTOMER STATES IT KILLS CYCLE ABOUT 30 MINUTES INTO RUNNING AND FLASHES BE ... 

A bubble error would seem to indicate oversudsing, but our tech said that wasn't the case.

Fortunately, Brother Slav had the answer for us:

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Yep, it's a bE error code.

If it's leveled and doesn't have suds, LG says it could be a clogged pump or the top nozzle misaligned/damaged.

Turns out, this so-called "bubble error" can mean all kinds of problems that have nothing to do with suds, such as a leveling issue:

Or a problem with the pump:

You can check out the full list of bE error code causes here.