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Appliance Fix Guide

Bosch Dishwasher error code

Bosch Dishwasher Error E02

Error code requiring model-specific diagnosis

Main control board relay fault.

Updated Aug 18, 2026
Diagnose before buying a part
Bosch dishwasher repair guide for error E02
Error codeE02Dishwasher

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

  1. 1
    Check 1

    Reset the dishwasher by turning off power at the circuit breaker for at least 30 seconds.

  2. 2
    Check 2

    Disconnect power and water, then access and test the thermistor with a multimeter.

  3. 3
    Check 3

    Inspect the heating element for any visible damage.

A quick explanation

What does E02 mean?

Main control board relay fault.

The full model number matters. Appliances can show the same code while using different wiring, sensors, or control parts.

The answer you came for

How to fix Bosch dishwasher error E02

  1. 1

    Step 1

    1. Turn off the power to the dishwasher at the circuit breaker. 2. Access the bottom of the dishwasher by removing the lower access panel. 3. The temperature sensor (thermistor) is located on the sump assembly. Disconnect the wires from the sensor. 4. Rotate the sensor to release it and pull it out. Install the new sensor and reconnect the wires. 5. If replacing the control board, remove the outer door panel by taking out the screws around the inner door. 6. Disconnect the wire harnesses from the control board, remove the board, and install the new one, ensuring all connections are secure. 7. Reassemble the dishwasher, restore power, and check if the error is cleared.

Read the additional checks from the current guide

How to Fix E02 Error (Step-by-Step) Turn off the power to the dishwasher at the circuit breaker. Access the bottom of the dishwasher by removing the lower access panel. The temperature sensor (thermistor) is located on the sump assembly. Disconnect the wires from the sensor. Rotate the sensor to release it and pull it out. Install the new sensor and reconnect the wires. If replacing the control board, remove the outer door panel by taking out the screws around the inner door. Disconnect the wire harnesses from the control board, remove the board, and install the new one, ensuring all connections are secure. Reassemble the dishwasher, restore power, and check if the error is cleared. Turn the appliance off, wait about 2 minutes, then turn it back on. Next Steps and Parts Verified Compatible Alternatives: Temperature Sensor (Thermistor) 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.

What to Check Next on This Bosch Dishwasher Bosch Dishwasher Error E02: 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 heat and temperature path: water circulation, heater circuit, NTC sensor, 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. 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. Record the complete model number and use model-specific diagnostics before ordering.

What may be causing it?

  • Faulty temperature sensor/thermistor
  • Defective heating element
  • Malfunctioning main 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: 00165281

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

Why this part is shown: It is associated with Bosch Dishwasher error E02 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.

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Replacement options

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