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Appliance Fix Guide

Bosch Dishwasher error code

Bosch Dishwasher Error E0103

Main control board relay fault/error.

Main control board relay fault/error.

Updated Aug 18, 2026
informationalno_parts
Bosch dishwasher repair guide for error E0103
Error codeE0103Dishwasher

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

  1. 1
    Check 1

    Perform a hard reset by unplugging the dishwasher for 10-15 minutes.

  2. 2
    Check 2

    Verify the outlet is providing the correct voltage and check the power cord for damage.

  3. 3
    Check 3

    Look for any visible damage to the control board.

A quick explanation

What does E0103 mean?

Main control board relay fault/error.

The answer you came for

How to fix Bosch dishwasher error E0103

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

  1. 1

    Step 1

    1. Press the On/Off button to turn the dishwasher off.

  2. 2

    Step 2

    2. To ensure your safety, completely disconnect the appliance from its power source. Either unplug the power cord from the wall outlet or switch off the dedicated circuit breaker in your home's fuse box.

  3. 3

    Step 3

    3. Let the dishwasher remain without power for a minimum of 15 minutes. This extended time allows the internal electronic components and the main control board to fully discharge and reset.

  4. 4

    Step 4

    4. After the 15-minute period has passed, restore power to the dishwasher by plugging it back in or flipping the circuit breaker on.

  5. 5

    Step 5

    5. Power on the dishwasher and try to start a new cleaning cycle to see if the error has been cleared.

  6. 6

    Step 6

    6. If the E0103 error code returns on the display, it signifies a permanent internal failure in a relay on the main control board.

  7. 7

    Step 7

    7. This issue cannot be resolved with a simple part replacement and requires professional service. The main control board will need to be diagnosed and replaced by a qualified technician.

Read the additional checks from the current guide

How to Fix E0103 Error (Step-by-Step) Press the On/Off button to turn the dishwasher off.To ensure your safety, completely disconnect the appliance from its power source. Either unplug the power cord from the wall outlet or switch off the dedicated circuit breaker in your home's fuse box.Let the dishwasher remain without power for a minimum of 15 minutes. This extended time allows the internal electronic components and the main control board to fully discharge and reset.After the 15-minute period has passed, restore power to the dishwasher by plugging it back in or flipping the circuit breaker on.Power on the dishwasher and try to start a new cleaning cycle to see if the error has been cleared.This issue cannot be resolved with a simple part replacement and requires professional service. The main control board will need to be diagnosed and replaced by a qualified service.Turn the appliance off, wait about 2 minutes, then turn it back on.

What to Check Next on This Bosch Dishwasher Bosch Dishwasher Error E0103: Use the code, light, or symbol as the starting clue, then confirm what the dishwasher actually does before ordering parts. 1. Turn power off before opening panels, reaching into the sump, touching wiring, or checking the pump, heater, valve, sensor, latch, or control area. 2. Confirm whether the display is a normal cycle/status symbol or a recurring fault that interrupts filling, washing, draining, drying, locking, or control response. 3. Start with the wash path: filter, sump debris, spray-arm movement, circulation-pump sound, wiring, and control output. 4. Clean the filter and sump, check spray-arm movement, verify water supply, inspect the drain hose and sink connection, and correct any visible blockage before replacing parts. 5. Run a short test cycle and watch where it fails; the exact stage matters more than the displayed word or symbol by itself. 6. Replace a part only after the same symptom repeats and the model-specific checks point to that part category. Match any replacement to the complete Bosch model number on the door tag. If the issue returns after these checks, match replacement parts to the complete Bosch dishwasher model number from the door tag. The same display clue can point to different components depending on the exact model and when the failure appears. Parts Availability Note: For this Electrolux/Frigidaire error code, exact OEM part numbers can vary by model revision and serial range. We’ve listed the most likely component(s), but confirm compatibility using your full model number before ordering. If no exact SKU is shown, use this guide for diagnosis first, then verify the matching OEM part on RepairClinic or PartSelect. 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.

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 control board or power module
  • Power supply issue

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

Recommended part

Recommended part for this error code

Replacement part

OEM candidate: 00675759

Why this part is shown: It is associated with Bosch Dishwasher error E0103 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

Ready to replace your dishwasher?

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

Why shop your replacement on Amazon?

  • Fast, free delivery

    Prime members can get fast, free delivery on eligible items.

  • Convenient delivery options

    Select large appliances may offer scheduled or Room of Choice delivery.

  • Haul-away options

    Haul-away may be available for select appliances and delivery areas.

  • 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.

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