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Bosch Dishwasher Error Code E01

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026
⚠ High Severity 🔧🔧 Moderate DIY

Heating element or NTC sensor failure — water not heating

The most common cause of the E01 error on a Bosch dishwasher is heating element open circuit (~55% of cases); start with: test the heating element.

💰 DIY cost: $15–$90 👨‍🔧 Pro cost: $200–$400 Save $185+ by doing it yourself
Bosch Dishwasher error code E01 on the display panel
How the E01 code appears on a Bosch dishwasher display

What Does Error Code E01 Mean on a Bosch Dishwasher?

Heating element or NTC sensor failure — water not heating.

E01 fires when the control board cannot bring water to the programmed temperature within the expected time. The board monitors the NTC thermistor while energizing the flow-through heater; an open heating element, an out-of-range or shorted NTC reading, or a failed heater relay all prevent the sensed temperature from rising. Unlike drainage or fill faults, E01 points specifically at the heating circuit, so cycles may run but dishes stay cold and drying is poor.

Models affected: Bosch dishwashers using a flow-through heating element with an integrated NTC temperature sensor, common across most 300/500/800-series tall-tub models
What owners report: Owners commonly report E01 appearing mid-cycle alongside dishes that come out wet or cold, and dishwashers that never feel warm inside. Occasionally a loose element terminal or a one-off glitch triggers it, so testing continuity before buying parts is a frequently mentioned quick win.

What Causes Error Code E01?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Heating element open circuit 55% of cases
  2. 2
    NTC temperature sensor failure 30% of cases
  3. 3
    Heater relay on control board failed 15% of cases

How to Fix Bosch Dishwasher Error Code E01

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Test the heating element

    Access from under the dishwasher. Disconnect element terminals. Should read 15–25 ohms. Open circuit = element failure.

    🔩 Multimeter 🔩 Bosch heating element ($40–$90)
  2. 2

    Test the NTC sensor

    At room temperature: approximately 6k–7k ohms.

    🔩 NTC sensor ($15–$40)
  3. 3

    Replace failed component

    Install new element or sensor as needed.

How to Reset Error Code E01

After replacement, run a test cycle on a short program.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Bosch dishwasher reset guide → Enter diagnostic mode →

Did this guide fix your appliance?

When to Call a Professional

If element and sensor both test OK, the control board heater relay has failed.

Average professional repair cost for this issue: $200–$400

Same Code on Other Brands

Error code E01 appears on these other brands too. See every brand that shows E01 →

Broan-NuTone logo
Broan-NuTone Range Hood E01
Fan motor overload — motor drawing excess current
Electrolux logo
Electrolux Dryer E01
Door lock / safety circuit fault — dryer will not start

Find Replacement Parts

Use these links to find the exact replacement parts for your Bosch Dishwasher:

🔩
Search PartSelect
Bosch Dishwasher repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Bosch Dishwasher Error Codes

E15 Leak protection activated — water detected in base tray E24 Drain blocked — dishwasher not draining E25 Drain pump or filter blocked — drain impeller obstructed E09 Heating circuit failure — heater not functioning E05 Water shortage — insufficient water entering dishwasher E22 Residual water in the sump — filter or impeller area blocked

Frequently Asked Questions

Can I keep using my Bosch Dishwasher when error E01 appears? +
It is not advisable. The dishwasher may still power on, but running it while E01 is active can worsen the heating fault or damage related parts. Treat it as a soon-as-possible repair.
What most commonly causes E01 on a Bosch Dishwasher? +
Across reported Bosch dishwasher repairs, the most frequent is heating element open circuit (55% of cases), nTC temperature sensor failure (30%), then heater relay on control board failed (15%). Check them in that order before replacing any parts.
E01 keeps coming back after a reset — what should I check next? +
A reset only clears the stored E01 fault; if it returns, the heating problem is still present. Move on to the physical checks — test the heating element, then test the NTC sensor — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.
How much does it cost to fix Bosch Dishwasher error E01? +
A DIY repair typically runs $15–$90 in parts, versus $200–$400 for a professional service call, so handling it yourself saves around $185. Expect the work to take roughly 30–60 minutes.
Which Bosch Dishwasher models show error E01? +
E01 is documented on Bosch dishwashers using a flow-through heating element with an integrated NTC temperature sensor, common across most 300/500/800-series tall-tub models. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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