LG Dishwasher with LE error code

[LG5811]

LG LDS5811BB Dishwasher. I have the same LDS5811BB dishwasher with the same LE error code problem...

My fiancée said it happened yesterday, but I wasn't around to hear or see it.  So, I did a little research online and found this to be a common problem.  Per my research on this, I was told to check the impeller for debris.
Well, I just got done pulling out the bottom rack, the bottom sprayer bar, sump cover and checking the screen filter and impeller.  The impeller spun free and there weren't any visible objects in there that would cause it to get stuck, but I still made sure to rinse everything off before reassembly.  When I reassembled everything and turned it back on, it ran for about 15min and was still much louder than normal (sounds like the motor "chunking" described above) before I got the LE error code again.

I haven't checked the wiring issue you all described, but could it even be an issue considering the run time and noises before the error?

Am I going motor shopping or is there anything else I should check first?

[john63]

This is a failing SUMP ASSEMBLY.

The new SUMP ASSEMBLY (AJH31248604) will not only solve the "LE" error but improve wash results significantly.

[LG5811]

I just ordered the sump assembly from Sears Parts Direct and found a 10% discount code (90055) that saved me $14.30 off the order. 

Thanks again for the help.  I'll post up the results when I get the parts.