ApplianceErrors.com

Bosch Oven Error Code E111

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

Oven temperature sensor failure — NTC sensor open circuit

The most common cause of the E111 error on a Bosch oven is oven temperature probe burned out or open circuit (~65% of cases); start with: test the temperature probe.

💰 DIY cost: $25–$60 👨‍🔧 Pro cost: $150–$320 Save $125+ by doing it yourself
Bosch Oven error code E111 on the display panel
How the E111 code appears on a Bosch oven display

What Does Error Code E111 Mean on a Bosch Oven?

Oven temperature sensor failure — NTC sensor open circuit.

E111 fires when the control board reads an open circuit on the NTC oven temperature sensor — effectively an infinite or out-of-range resistance where it expects roughly 1,000–1,100 ohms at room temperature. Without a valid reading, the board cannot close its heat-regulation loop, so it locks out cooking. This distinguishes E111 from short-circuit or drift faults: it points to a broken probe element, an unseated 2-wire connector, or severed wiring rather than a miscalibrated but live sensor.

Models affected: Bosch wall ovens and ranges with an NTC cavity temperature sensor, including the HBL8453UC
What owners report: Owners commonly report E111 appearing at power-up or partway through a bake cycle, sometimes after a self-clean run stresses the probe. A loose or partially unseated sensor connector is a frequent false trigger, and many find reseating it clears the code before any part is ordered.

What Causes Error Code E111?

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

  1. 1
    Oven temperature probe burned out or open circuit 65% of cases
  2. 2
    Probe connector loose at control board 25% of cases
  3. 3
    Wiring from probe to board damaged 10% of cases

How to Fix Bosch Oven Error Code E111

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Test the temperature probe

    The probe is usually a small pointed sensor inside the oven cavity. Test resistance at room temperature — should read approximately 1,000–1,100 ohms.

    🔩 Multimeter
  2. 2

    Check the connector

    The probe connects to the control board via a 2-wire connector. Ensure it is firmly seated.

  3. 3

    Replace the probe

    Unscrew from the oven back wall and replace with a new probe.

    🔩 Bosch oven temperature probe ($25–$60)

How to Reset Error Code E111

After replacing the probe, run the oven on a short bake cycle. The error should not return.

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

Did this guide fix your appliance?

When to Call a Professional

If the probe is new and tests correctly but E111 persists, the control board's sensor input circuit has failed.

Average professional repair cost for this issue: $150–$320

Related Error Codes

E002
Heating element failure — oven not heating
⚠ High Severity
E132
Safety cutout tripped — oven overheated
🛑 Critical — Stop Using

Find Replacement Parts

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

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

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

Frequently Asked Questions

Can I keep using my Bosch Oven when error E111 appears? +
You often can for a cycle or two, but the sensor issue behind E111 will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes E111 on a Bosch Oven? +
Across reported Bosch oven repairs, the most frequent is oven temperature probe burned out or open circuit (65% of cases), probe connector loose at control board (25%), then wiring from probe to board damaged (10%). Check them in that order before replacing any parts.
E111 keeps coming back after a reset — what should I check next? +
A reset only clears the stored E111 fault; if it returns, the sensor problem is still present. Move on to the physical checks — test the temperature probe, then check the connector — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix Bosch Oven error E111? +
A DIY repair typically runs $25–$60 in parts, versus $150–$320 for a professional service call, so handling it yourself saves around $125. Expect the work to take about 10–20 minutes.
Which Bosch Oven models show error E111? +
E111 is documented on Bosch wall ovens and ranges with an NTC cavity temperature sensor, including the HBL8453UC. 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.

← All Bosch Oven Error Codes ← All Bosch Error Codes