Error code reference

Samsung Washer Error Code AC2

Communication check error where signals between the DR Module and main PBAs are not sensed due to communication failure or incorrect/loose connections.

SourceSamsung Top-Load Washer - Full Service Manual (WA52J8700AP/AW)p. 20

Diagnostic procedure

The full AC2 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check the connector connections between the DR Module and main PBAs for incorrect or loose connections.

SourceSamsung Top-Load Washer - Full Service Manual (WA52J8700AP/AW)p. 20

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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