8e code

8e error code in the tech sheet says – Check MEMS PCB ,Main PCB & Wire-harness. The MEMS sensor is the vibration sensor, p# DC93-00376D. I have seen and issue with the lower wire harness that usually causes this error code, but it could be the board or sensor as well. The 2 wire harnesses on the unit are DC93-00473A, and DC93-00150C. I’m not sure which one is the lower harness from the parts break down. Searching both, I found no indication anywhere of which one is the lower. They are number 11-7 and 16 on the diagram.