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Error code reference

Cove Dishwasher Error Code 600151

Diverter valve

Cove codesCove dishwasher codes

Diverter valve: Non-expected home detected.

First step from the service manual

Disconnect the power to the unit.

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

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What 600151 means on a Cove dishwasher

Error code 600151 on a Cove dishwasher indicates that the diverter valve has been detected in an unexpected home position. The diverter valve is a motorized component responsible for routing water to different spray arm zones during a wash cycle. At the start of a cycle or between wash phases, the control board sends the diverter valve to a known reference position, commonly called the home position. When the board reads a position signal that does not match what is expected for that home state, it triggers this fault and halts operation to prevent incorrect water distribution.

The most likely causes involve the diverter valve motor, the position sensor or hall effect sensor built into the valve assembly, or wiring faults between the valve and the control board. A failed or sticking valve motor may stop rotating at an incorrect position, causing the sensor to report a non-standard reading. A damaged or contaminated position sensor can also transmit incorrect feedback signals even when the motor moves correctly.

Before performing any diagnostics, the first required step is to disconnect power to the unit completely. This protects both the technician and the control electronics. After safely de-energizing the appliance, the diagnostic process should focus on inspecting the diverter valve harness for damaged or corroded pins, verifying that the valve moves freely without mechanical obstruction, and testing the motor and sensor signals with a multimeter. If the valve assembly is found to be faulty, replacement of the complete diverter valve unit is typically required.

Source: manufacturer service documentation.

Common causes of 600151

  1. 01

    Faulty diverter valve motor

    Part replacement

    The motor inside the diverter valve may have failed or seized, preventing the valve from reaching its home position. This is the most common hardware failure associated with this code and typically requires replacing the valve assembly.

  2. 02

    Defective position sensor within the valve

    Part replacement

    The diverter valve contains an internal position sensor that reports location back to the control board. If this sensor is damaged or sending incorrect signals, the board registers an unexpected home position even if the motor is functioning.

  3. 03

    Wiring harness damage or poor connection

    Wiring / connection

    Corroded, pinched, or loose connector pins on the wiring harness between the diverter valve and the control board can cause intermittent or incorrect position signals. Inspect the harness and connectors carefully for visible damage or corrosion.

  4. 04

    Mechanical obstruction blocking valve movement

    Wiring / connection

    Debris or a foreign object lodged in the diverter valve mechanism can physically prevent the valve from returning to its home position. Check for obstructions in and around the valve after disconnecting power.

  5. 05

    Control board fault

    Part replacement

    In less common cases, the main control board may be incorrectly reading or interpreting the position sensor signal due to an internal board failure. This should be considered only after the valve and wiring have been ruled out.

See the test procedure for each cause

Frequently asked questions about 600151

What does 600151 mean on a Cove dishwasher?
Error code 600151 means the dishwasher's diverter valve has been detected in a position that the control board does not expect as the home position. The diverter valve routes water to different spray zones during the wash cycle, and this code indicates that the valve's reported position does not match the required reference point. The appliance stops operation to prevent incorrect water distribution or potential damage.
Can I fix error code 600151 myself?
Some steps are manageable for a knowledgeable DIYer, such as inspecting the wiring harness for loose or corroded connectors and checking for physical obstructions around the diverter valve after disconnecting power. However, testing the valve motor and position sensor requires a multimeter and familiarity with appliance electrical systems. Replacing the diverter valve assembly is also a moderately advanced repair, so many homeowners prefer to have a qualified technician handle it.
Is it safe to keep using my Cove dishwasher when error 600151 appears?
No, you should not continue running the dishwasher when this code is active. The diverter valve controls where water flows during a cycle, and operating the machine with a valve fault could result in poor cleaning performance or improper water routing. Disconnect power and have the unit diagnosed before running another cycle.
How much does it cost to repair error code 600151 on a Cove dishwasher?
Repair costs vary depending on what component has failed. If only a wiring connection needs to be reseated or repaired, costs may be limited to a service call fee, typically in the range of $75 to $150. If the diverter valve assembly requires replacement, parts and labor combined could range from $200 to $500 or more depending on your location and the technician's rates.
Will resetting the dishwasher clear error code 600151?
A power reset may temporarily clear the code if the fault was caused by a one-time signal glitch, but it will almost certainly return if there is an underlying hardware problem with the diverter valve, its sensor, or the wiring. Simply resetting the unit without diagnosing and correcting the root cause is not a reliable fix. A proper inspection of the diverter valve system is needed to resolve the fault permanently.

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