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Error code reference

Viking Dishwasher Error Code 1-3

Motor control comms error-main control cannot successfully communicate with the motor control.

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What the 1-3 error code actually means

Your Viking dishwasher's main computer is unable to talk to the part that controls the wash motor, so the machine has stopped to avoid damage. This is usually caused by a loose wire connection or a failed circuit board inside the dishwasher. A technician will need to trace the wiring and test both control boards to find the exact cause.

Diagnostic procedure

The full 1-3 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check wires disconnected between motor controller and control board; if OK, check defective motor control; then check defective control board.
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 1-3

Ranked by how often they cause this code
  1. 1Loose or disconnected wiring harness
  2. 2Damaged wiring between control boards
  3. 3Failed motor control board
  4. 4Failed main control board

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Questions people ask about 1-3

What does 1-3 mean on a Viking dishwasher?
Error code 1-3 means the main control board cannot successfully communicate with the motor control board. This communication link is required for the main board to send motor commands during a wash cycle. The dishwasher stops operation when this link fails to prevent uncontrolled motor behavior. The cause is typically a wiring issue or a failed control board.
Is it safe to use my Viking dishwasher while error code 1-3 is displayed?
No, you should not attempt to run the dishwasher while this error is active. The machine has stopped operation specifically because the motor control system cannot receive proper commands. Running it in this state risks unpredictable motor behavior and potential additional damage to the control boards or wash motor.
Will resetting my Viking dishwasher clear error code 1-3?
A reset may temporarily clear the error code from the display, but it will not resolve the underlying communication fault. If the wiring connection is loose, reseating the connector and then resetting the machine may clear the code permanently. However, if a control board has failed, the error will return as soon as the dishwasher attempts to operate, and the faulty component will need to be replaced.
Can I fix error code 1-3 on my Viking dishwasher myself?
A knowledgeable DIYer can start by checking that all wire connectors between the motor control board and the main control board are fully seated and free of corrosion. If the connectors are secure and the error persists, diagnosing and replacing a control board requires comfort working with appliance electronics and is best left to a qualified technician. Attempting board replacement without proper diagnosis can result in replacing the wrong component.
How much does it cost to repair a Viking dishwasher with error code 1-3?
Repair costs depend on the root cause. If the fix is simply reseating a loose connector, costs may be limited to a service call fee, typically in the range of $75 to $150. Replacing a motor control board or main control board on a Viking dishwasher generally runs between $200 and $500 or more, including parts and labor. Getting a diagnostic visit before authorizing parts replacement is recommended.

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