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Appliance Fix Guide

Bosch Dishwasher error code

Bosch Dishwasher Error E05

Wash arm diverter circuit fault on the main control board.

Wash arm diverter circuit fault on the main control board.

Updated Aug 18, 2026
Diagnose before buying a part
Bosch dishwasher repair guide for error E05
Error codeE05Dishwasher

Try these first

Start here before buying a part or taking the appliance apart.

  1. 1
    Check 1

    Reset the control board by turning off the power at the circuit breaker for about 5 minutes.

  2. 2
    Check 2

    With the power off, inspect the power module for any visible damage.

  3. 3
    Check 3

    Check the float switch in the bottom of the dishwasher to ensure it is not stuck.

A quick explanation

What does E05 mean?

Wash arm diverter circuit fault on the main control board.

The answer you came for

How to fix Bosch dishwasher error E05

Start with the safest checks and work from simple to technical.

  1. 1

    Step 1

    1. Turn off the power to the dishwasher at the circuit breaker.

  2. 2

    Step 2

    2. The float switch is located in the bottom of the dishwasher tub. Remove the lower dish rack to access the float switch cover.

  3. 3

    Step 3

    3. Remove the cover and lift out the float mechanism. The switch is underneath. Disconnect the wires from the switch.

  4. 4

    Step 4

    4. Squeeze the locking tabs on the switch to release it and push it out from the bottom of the tub.

  5. 5

    Step 5

    5. Install the new float switch, reconnect the wires, and reassemble the float mechanism. If the problem continues, replace the control board.

  6. 6

    Step 6

    6. To replace the control board, remove the outer door panel to access it. Carefully disconnect all wire harnesses.

  7. 7

    Step 7

    7. Install the new board, reconnect the wires, reassemble the door, and then test the dishwasher.

Read the additional checks from the current guide

How to Fix E05 Error (Step-by-Step) Turn off the power to the dishwasher at the circuit breaker. The float switch is located in the bottom of the dishwasher tub. Remove the lower dish rack to access the float switch cover. Remove the cover and lift out the float mechanism. The switch is underneath. Disconnect the wires from the switch. Squeeze the locking tabs on the switch to release it and push it out from the bottom of the tub. Install the new float switch, reconnect the wires, and reassemble the float mechanism. If the problem continues, replace the control board. To replace the control board, remove the outer door panel to access it. Carefully disconnect all wire harnesses. Install the new board, reconnect the wires, reassemble the door, and then test the dishwasher. Turn the appliance off, wait about 2 minutes, then turn it back on. Next Steps and Parts Verified Compatible Alternatives: Control Board Recommended Parts to Check No exact official OEM part number is listed here because the correct Bosch dishwasher part can vary by complete model number. These are targeted part-category searches, not universal fit claims. Bosch dishwasher water inlet valve Common replacement category: Water inlet valve Fit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for fill and water-supply faults after the tap, hose, and inlet screen are checked. Search Amazon for Bosch dishwasher water inlet valve Bosch dishwasher drain pump Common replacement category: Drain pump Fit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for drain and standing-water symptoms after the filter, sump, and hose are checked. Search Amazon for Bosch dishwasher drain pump Bosch dishwasher circulation pump Common replacement category: Circulation pump / wash motor Fit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for wash, spray-arm, and circulation symptoms after filters and spray arms are checked. Search Amazon for Bosch dishwasher circulation pump Before ordering: match the part to the complete Bosch dishwasher model number on the appliance tag. Still Not Working? If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure. Get the Dishwasher Error Code Guide: https://appliancewhisperer.gumroad.com/l/fdcge

If the code comes back

Do not keep replacing parts based only on the code. Repeat the safe checks above. If the fault remains, stop and arrange qualified service rather than ordering from the code alone.

What may be causing it?

  • Faulty water switch/diverter
  • Stuck or faulty float switch
  • Defective control board

These are possibilities to investigate, not proof that one part has failed.

Recommended part

Recommended part for this error code

Replacement part

OEM candidate: 00751950

Price noted in the current guide: $170-$400

Why this part is shown: It is associated with Bosch Dishwasher error E05 in the current guide. The error code alone does not prove this part has failed.

Compatibility varies by model. Confirm that the Amazon listing includes your complete dishwasher model number before ordering.

Amazon part link View recommended part on Amazon

You can open the recommendation now. Check model compatibility on the Amazon page before purchasing.

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Replacement options

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If repairing this dishwasher no longer feels worthwhile, compare three replacement paths below.

Why shop your replacement on Amazon?

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  • Convenient delivery options

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  • Haul-away options

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  • Installation help

    Installation or assembly may be available on select items.

Delivery and service options, fees, and availability vary by item, seller, and delivery ZIP code. Confirm available services at Amazon checkout.

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Make the money decision

Repair or replace calculator

Use the age and total repair estimate to get a simple comparison. This is guidance, not a guarantee.

Safety first

Disconnect power before opening panels or touching internal parts.

When to stop
  • Stop if you see burned wiring, melted connectors, water near electrical parts, or a gas smell.
  • Do not perform live-voltage testing unless you are trained and equipped for it.
  • Use the exact model manual or service information before replacing electronic controls.

Free quick sheet

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