Error code reference

Samsung Dishwasher Error Code AE

Main-Sub PBA communication error

Main-Sub PBA communication error: communications between the main PBA and the sub PBA fails for 24 seconds (6 seconds in test mode).

First step from the service manual

Check the connections between MAIN PBA CN402 connector and Display Control Module CN101 connector.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Main-Sub PBA communication error

From Service Manual 138872, p.44:

1.Check the connections between MAIN PBA CN402 connector and Display Control Module CN101 connector.

2.Inspect the communication harness between the main control and the UI board for bent pins or unseated connectors at each end.

3.Measure supply voltage to the UI board. Expected: 5 VDC at the interface connector; a low or missing rail points back to the main control supply.

Part DA41-00651R

Display board

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