Whirlpool Washer doesn't drain completely all the time

Washer Repair
1

Brand:whirlpool
Model Number11020022013
Main Symptom:
What happens & when:

Error Code (if any):
Parts or tests already tried:
Photos / video link:

2

Check the drain pump for debris as this would be the most likely cause for this issue. Also, check to make sure that there is no issue with the impeller.