Samsung Dishwasher, Drain Error Code-blinking Lite @ Delegate

Dishwasher Repair
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1

Samsung Dishwasher, Model Dmt400rhs-drain Error Code / Blinking Light @ Delegate.
Replaced Sump Assembly, Same Error Code
Any Help / Suggestion’s

3

1)Something is obstructing the draining process/pump
2)Drain pump is defective
3)Main PBC is defective
4)I have seen the drain pump o-ring gasket jam the pump motor.