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Appliance Error Codes

Bosch HDI8054U Error Code E101

Error E101 on Bosch : Oven cavity temperature sensor failure — NTC sensor disconnected, open circuit. Follow the troubleshooting steps below to diagnose and fix this range issue. ## What Error Code E101 Means on a Bosch HDI8054U Oven cavity temperature sensor failure — NTC sensor disconnected, open circuit, or out-of-range resistance ## What This Error Means Error code E101 on your Bosch 800 Series Slide-In Range indicates a failure of the oven cavity temperature sensor (also called the oven NTC probe or RTD sensor). When the control board detects that the sensor is disconnected, has an open-circuit reading, or measures outside the acceptable resistance range, it throws E101, immediately stops all heating, and runs the cooling fan at maximum speed to protect internal components. The oven cavity temperature sensor is a small thermistor probe mounted on the rear wall inside the oven. At room temperature (~70°F / 21°C) it should measure approximately 1,080 ohms. A reading below ~900 ohms suggests a short circuit; a reading of OL (open loop/infinity) indicates a broken wire or failed probe. Common causes: vibration during cleaning or a self-clean cycle loosening the sensor connector, heat cycling causing the sensor wire to crack, or moisture intrusion during cleaning. In most cases, replacing the oven temperature sensor (Bosch part 00642855 or model-specific equivalent) resolves E101 without requiring a service call. If the sensor tests good but E101 persists, the main control board may need replacement. ## Quick Diagnostic Summary | Detail | Value | |--------|-------| | Error Code | E101 | | Severity | High | | Appliance | Bosch HDI8054U 800 Series Dual-Fuel Slide-In Range | | User-Fixable | Yes | | Applicable Models | HEI8054U, HGI8054UC, HDI8054U | ## Step-by-Step Troubleshooting | Step | Action | What To Do | Expected Result | |------|--------|------------|-----------------| | 1 | Power off the range and test the sensor | Turn off the range at the circuit breaker (electric/dual-fuel) or at the gas shutoff and breaker. Wait 10 minutes for the oven to cool. Open the oven door and locate the temperature sensor probe on the upper-rear wall — a thin metal rod about 2.5 inches long with a two-wire harness. | Oven is de-energized and cool. Sensor probe is visible on the back wall. | | 2 | Disconnect and measure sensor resistance | Remove the two Torx T20 or Phillips screws holding the sensor bracket. Pull the sensor forward gently to expose the wiring harness connector. Unplug the connector. Set a digital multimeter to the ohms (Ω) range. Touch the probes to the two sensor terminals. | Multimeter reads ~1,080 ohms ±10% (970–1,190 Ω) at room temp if the sensor is good; OL or near-zero = failed sensor. | | 3 | Replace the temperature sensor if faulty | Order Bosch oven temperature sensor part 00642855 (verify fit against your model number). Plug the new sensor connector in until it clicks. Seat the sensor in its bracket, reinstall the two screws finger-tight then snug — do not overtighten. | New sensor is secured with both screws. Harness connector is fully seated. | | 4 | Check the wiring harness if sensor tested OK | If the sensor measured within spec, inspect the full length of the sensor wiring harness from the probe to the control board connector. Look for chafing, melted insulation, or a loose control board connector. Reseat all connectors firmly. | Wiring is intact with no visible damage; all connectors are fully seated. | | 5 | Restore power and verify E101 is cleared | Restore power at the breaker. Set the oven to Bake at 350°F. Allow it to preheat fully (~12 minutes). If E101 does not return and the oven reaches and holds temperature, the repair is complete. | Oven preheats to 350°F without displaying E101. Cooling fan returns to normal quiet operation. | ## Frequently Asked Questions ### Can I use the stovetop burners while E101 is active? On electric models the cooktop elements share the same power board, so they may be disabled by E101. On gas slide-in models the burners use a separate gas valve and igniter circuit — they typically remain usable while E101 is active. However, it is safest to resolve the error before cooking. ### What resistance should the Bosch oven temperature sensor read? At room temperature (~70°F / 21°C) the Bosch 800 Series range oven sensor should read approximately 1,080 ohms. Acceptable range is 970–1,190 ohms. A reading of OL (open loop) means a broken wire or failed probe. A reading near zero indicates a short circuit. Both conditions trigger E101. ### E101 came back after replacing the sensor — what next? If E101 returns after a confirmed sensor replacement with correct part, the fault is likely in the wiring harness (a chafed wire intermittently touching the chassis) or the main control board itself. Inspect the harness from the sensor to the board for any wear, and if it is intact, replace the control board. ### How do I access the Bosch range service mode to clear fault logs? With the oven off, press and hold the Clock and + buttons simultaneously for 5 seconds until the display shows ‘tESt’. Navigate to the fault log with the arrow buttons. You can view stored error codes and clear the log. This does not fix the underlying fault — only resolve the root cause first, then clear the log. --- Last Updated: March 2026 · Bosch 800 Series Dual-Fuel Slide-In Range · Error Code E101 ### Is it safe to keep using my Bosch with error E101? If error E101 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the range with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error E101 on a Bosch ? Repair costs for error E101 on the Bosch range depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code E101 mean on a Bosch range? Error code E101 on Bosch range models indicates Oven cavity temperature sensor failure — NTC sensor disconnected, open circuit, or out-of-range resi. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue. ### Is it safe to keep using my Bosch with error E101? If error E101 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the range with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error E101 on a Bosch ? Repair costs for error E101 on the Bosch range depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code E101 mean on a Bosch range? Error code E101 on Bosch range models indicates Oven cavity temperature sensor failure — NTC sensor disconnected, open circuit, or out-of-range resi. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.