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Error code reference

Viking Dishwasher Error Code E:05

Wash diverter valve fault

Viking codesViking dishwasher codes

Wash diverter valve fault — the proper position signal could not be received from the 3-way/multi valve that diverts water flow between upper and lower trays.

First step from the service manual

Check for malfunction of water diverter valve, cable harness errors, or faulty electronics.

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

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What E:05 means on a Viking dishwasher

The E:05 error code on a Viking dishwasher indicates a wash diverter valve fault. The diverter valve is a 3-way or multi-position valve responsible for directing water flow between the upper and lower spray arm assemblies during the wash cycle. The dishwasher's control board sends a signal to actuate the valve and expects a corresponding position feedback signal in return. When that confirmation signal is not received within the expected timeframe, the control board logs the E:05 fault and may halt or limit the wash cycle to prevent improper water distribution.

The most common sources of this fault fall into three categories: a failed diverter valve motor or actuator, a wiring harness issue between the valve and the control board, or a problem with the control electronics themselves. The valve contains a position sensor or feedback mechanism that communicates its current state back to the board. If the valve is mechanically stuck, the motor has failed, or the sensor within the valve is not functioning, the board will not receive the expected signal. Similarly, a broken, corroded, or disconnected wire in the cable harness can interrupt communication even if the valve itself is physically intact.

Diagnosing E:05 should begin with a visual inspection of the diverter valve and its wiring harness. Look for signs of physical damage, burnt connectors, or loose terminals at both the valve and the control board. If the harness checks out, the valve assembly should be tested for proper mechanical movement and motor function. If both the harness and valve appear operational, the control board may be the source of the fault, as faulty electronics can incorrectly interpret or fail to process the position signal.

Source: manufacturer service documentation.

Common causes of E:05

  1. 01

    Failed diverter valve motor or actuator

    Part replacement

    The motor inside the 3-way diverter valve can burn out or seize, preventing the valve from moving to the correct position. If the valve does not actuate, no position feedback signal can be sent back to the control board.

  2. 02

    Damaged or disconnected wiring harness

    Wiring / connection

    The cable harness connecting the diverter valve to the control board can develop broken wires, burnt connectors, or loose terminals. This interrupts the position signal even if the valve itself is functioning normally.

  3. 03

    Faulty position sensor within the valve

    Part replacement

    Many diverter valves include an internal position sensor that reports the valve state to the control board. If this sensor fails, the board receives no confirmation signal and triggers E:05.

  4. 04

    Debris or obstruction jamming the valve

    Wiring / connection

    Food particles or mineral scale buildup can physically block the valve from rotating to its target position. Inspect the valve for visible obstructions and check for restricted movement.

  5. 05

    Faulty control board

    Part replacement

    If the wiring harness and diverter valve both test as functional, the control board may be failing to send the correct actuation signal or misreading the feedback. This is the least common cause but should be evaluated after all other components are ruled out.

See the test procedure for each cause

Frequently asked questions about E:05

What does E:05 mean on a Viking dishwasher?
E:05 indicates a wash diverter valve fault. The dishwasher uses a 3-way valve to direct water between the upper and lower spray arm trays, and the control board was unable to receive the expected position confirmation signal from that valve. The fault can originate from the valve itself, the wiring harness, or the control electronics.
Can I fix the E:05 error on my Viking dishwasher myself?
Some causes of E:05 are accessible to experienced DIYers, particularly checking and reseating the wiring harness connectors or clearing debris from the diverter valve. However, replacing the diverter valve assembly or control board involves disconnecting electrical components and disassembling the dishwasher interior, which is best handled by a qualified technician if you are not comfortable with appliance repair.
Will resetting my Viking dishwasher clear the E:05 error?
A reset may temporarily clear the E:05 code, but if the underlying problem with the diverter valve, wiring, or control board is not resolved, the error will return during the next wash cycle when the dishwasher attempts to actuate the valve again. A reset is useful for confirming whether the fault is intermittent, but it is not a fix.
Is it safe to use my Viking dishwasher while the E:05 code is active?
Running the dishwasher with an active E:05 fault is not recommended. If the diverter valve is not operating correctly, water may not reach both spray arm zones, resulting in poor cleaning performance. Additionally, continued operation with a wiring or motor fault can potentially worsen the underlying problem over time.
How much does it cost to repair an E:05 error on a Viking dishwasher?
Repair costs vary depending on the root cause. Replacing a diverter valve assembly typically ranges from $150 to $350 including parts and labor. A control board replacement can range from $300 to $600 or more depending on parts availability and labor rates in your area. If only a wiring harness repair is needed, costs are generally on the lower end of that range.

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