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Error code reference

Samsung Dishwasher Error Code AE2

Main PBA to Inverter PBA communication failure

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What the AE2 error code actually means

Your Samsung dishwasher has detected that two of its internal control boards have stopped communicating with each other, and the machine shut down to protect itself after trying to reconnect several times. This is an electronics problem, not a water or plumbing issue. A repair technician will need to inspect the wiring and circuit boards inside the dishwasher to find and fix the problem.

Diagnostic procedure

The full AE2 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check communications connection for the main PBA or Inverter PBA.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of AE2

Ranked by how often they cause this code
  1. 1Loose or disconnected communication harness
  2. 2Corroded or damaged connector pins
  3. 3Failed inverter PBA
  4. 4Failed main PBA
  5. 5Damaged communication wiring

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Questions people ask about AE2

What does AE2 mean on a Samsung dishwasher?
The AE2 code indicates a communication failure between the main control board (main PBA) and the inverter control board (inverter PBA). The main board sent signals to the inverter board and received no response for 5 seconds, and this failure repeated three times before the code was displayed. The dishwasher shuts down the inverter relay for 1 minute between each attempt as a protective measure.
Is it safe to keep using my dishwasher with an AE2 error?
No, the dishwasher will not complete a wash cycle while the AE2 error is active because the inverter relay is disabled as part of the fault response. Continuing to attempt cycles without resolving the communication fault could place additional stress on the control boards. The appliance should be repaired before returning to regular use.
How much does it cost to repair an AE2 error on a Samsung dishwasher?
Repair costs vary depending on the root cause. If only the wiring harness or connector needs attention, costs are typically limited to a service call fee in the range of $75 to $150. If the inverter PBA or main PBA requires replacement, parts alone can range from $100 to $300 or more, with total repair costs including labor potentially reaching $200 to $450 depending on your location and service provider.
Can I fix the AE2 error myself?
A knowledgeable DIYer can start by checking whether the wiring harness between the main PBA and inverter PBA is fully connected and free of visible damage or corrosion. If the connectors look clean and secure, diagnosing or replacing the circuit boards involved typically requires familiarity with appliance electronics and is better handled by a technician.
Will resetting my Samsung dishwasher clear the AE2 error?
A reset may temporarily clear the displayed error, but the code will return if the underlying communication problem has not been resolved. Because the AE2 code only appears after the failure repeats three times, a reset that clears the display does not mean the fault is fixed. The wiring and boards must be inspected to prevent the error from recurring.

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