mypros+
Error code reference

LG Washer Error Code AC

Communication error-signals between sub and main PBAs not sensed due to communication failure, incorrect or loose connector connections, or faulty soldering on sub PBA.

SourceLG WV55M9605MV Washer - Full Service Manualp. 30, 37

LG codesLG washer codes
Diagnostic procedure

The full AC 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 wire connections and terminal contacts between sub and main PBAs; check for disconnected wires; check whether sub PBA is short-circuited because of moisture.

SourceLG WV55M9605MV Washer - Full Service Manualp. 30, 37

Unlock with pass
Unlock with pass
Unlock with pass
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock AC procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

Where this code is documented

5 manuals in the MyPros+ library document this code for LG washer.

Models covered by the manuals that document this code

Related LG washer error codes

All LG washer codes

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax