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Appliance Fix Guide

Bosch Dishwasher error code

Bosch Dishwasher Error E09

Internal heater fault within the heat pump.

Internal heater fault within the heat pump.

Updated Aug 18, 2026
Diagnose before buying a part
Bosch dishwasher repair guide for error E09
Error codeE09Dishwasher

Try these first

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

  1. 1
    Check 1

    Turn the dishwasher off at the breaker for a few minutes before restarting.

  2. 2
    Check 2

    Run a cycle and carefully check if the water is heating.

  3. 3
    Check 3

    Inspect the base for any leaks.

A quick explanation

What does E09 mean?

Internal heater fault within the heat pump.

The answer you came for

How to fix Bosch dishwasher error E09

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. Shut off the water supply to the dishwasher.

  3. 3

    Step 3

    3. Carefully slide the dishwasher out from its installation space.

  4. 4

    Step 4

    4. Lay the dishwasher on its back to access the heat pump at the bottom.

  5. 5

    Step 5

    5. Disconnect the electrical connectors and hoses attached to the heat pump assembly.

  6. 6

    Step 6

    6. Remove the screws or clips holding the heat pump in place and remove the old unit.

  7. 7

    Step 7

    7. Install the new heat pump assembly, reconnect all hoses and electrical connectors, and secure it in place before reassembling the dishwasher.

Read the additional checks from the current guide

How to Fix E09 Error (Step-by-Step) Turn off the power to the dishwasher at the circuit breaker. Shut off the water supply to the dishwasher and confirm the error stays cleared during a full test cycle. Carefully slide the dishwasher out from its installation space and confirm the error stays cleared during a full test cycle. Lay the dishwasher on its back to access the heat pump at the bottom. Disconnect the electrical connectors and hoses attached to the heat pump assembly. Remove the screws or clips holding the heat pump in place and remove the old unit. Install the new heat pump assembly, reconnect all hoses and electrical connectors, and secure it in place before reassembling the dishwasher. Turn the appliance off, wait about 2 minutes, then turn it back on. Next Steps and Parts Verified Compatible Alternatives: Heat Pump Assembly 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.

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 heat pump or heating element
  • A leak in the base of the dishwasher
  • Wiring issue with the heating circuit

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

Recommended part

Recommended part for this error code

Replacement part

OEM candidate: 12011015

Price noted in the current guide: $110-$280

Why this part is shown: It is associated with Bosch Dishwasher error E09 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.

Free quick sheet

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