Error Code: E05 Difficulty: Hard
Problem: Wash arm diverter circuit fault on the main control board.
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
- 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.
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Bosch dishwasher water inlet valveCommon replacement category: Water inlet valveFit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for fill and water-supply faults after the tap, hose, and inlet screen are checked. -
Bosch dishwasher drain pumpCommon replacement category: Drain pumpFit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for drain and standing-water symptoms after the filter, sump, and hose are checked. -
Bosch dishwasher circulation pumpCommon replacement category: Circulation pump / wash motorFit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for wash, spray-arm, and circulation symptoms after filters and spray arms are checked.
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.
More options (for a better recommendation)
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Get the Dishwasher Error Code Guide: https://appliancewhisperer.gumroad.com/l/fdcge
When It’s Better to Replace Than Repair
Dishwasher repairs can add up quickly when the pump, control, heater, or leak-related parts fail.
Confirm cabinet width, water line, drain routing, electrical connection, and panel style before ordering.
For repair parts, verify exact fit with the full dishwasher model number before buying; these links are general replacement-appliance shopping options.
- [OK]Drain pump or circulation pump failure
- [OK]Leaking tub, door, or float-switch issues
- [OK]Heater or control failures on an older unit
- [OK]Repeated poor washing or drying performance
Recommended Dishwasher Replacement Options
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