Skip to content
Appliance Error Codes

Bosch B36CD50SNS E01 Error Code | E01 Refrigerator Temperature Sensor Failure

Error e01 on Bosch b36cd50sns: Refrigerator compartment temperature sensor failure — NTC sensor open or short c. Follow the troubleshooting steps below to diagnose and fix this refrigerator issue. ## What Does E01 Mean on a Bosch B36CD50SNS? Your Bosch refrigerator is displaying an E01 error code, which indicates a fault with the temperature sensor in the fresh-food (refrigerator) compartment. This NTC (Negative Temperature Coefficient) sensor continuously monitors the refrigerator temperature and reports to the main control board, which uses it to cycle the compressor and fans. When the sensor reading falls outside the valid range — open circuit (broken wire) or short circuit — E01 is logged and the refrigerator may run in a default mode that is less precise than normal operation. ## Fault Details | Field | Value | |-------|-------| | Error Code | E01 | | Appliance | Bosch B36CD50SNS 500 Series French Door Counter-Depth Smart Refrigerator | | Fault Type | Refrigerator compartment temperature sensor failure | | Severity | Medium | | User Serviceable | No — professional service recommended | | Applicable Models | B36CD50SNS, B36CL80SNS, B36CT80SNS | ## Common Causes - NTC temperature sensor element failure — resistance outside valid range (expected ~7.1 kΩ at 25°C / 77°F)

  • Sensor wire harness damaged — wire cut, pinched, or insulation cracked
  • Sensor connector loose or corroded at the control board connection
  • Sensor physically displaced from its mounting clip in the refrigerator compartment
  • Main control board NTC sensor input circuit failure ## Step-by-Step Troubleshooting | Step | Action | What To Do | Expected Result | |------|--------|------------|-----------------| | 1 | Reset the refrigerator | Unplug the refrigerator for 5 minutes, then restore power. If E01 was caused by a transient electrical spike, it may clear after reset. Allow 24 hours for the refrigerator to stabilize before checking if E01 returns | E01 does not return after reset — transient fault cleared | | 2 | Locate the refrigerator compartment sensor | The sensor is a small bullet-shaped thermistor mounted on the refrigerator compartment wall or ceiling. It connects to a wire harness that runs to the main control board. Do not remove food; the sensor is accessible with the refrigerator running | Sensor located and visually inspected | | 3 | Inspect sensor and harness | Check the sensor body for cracks or discoloration. Trace the wire harness to its connector at the rear panel. Press the connector firmly to ensure full seating. Inspect the wire for cuts or abrasion damage | Harness intact; connector re-seated firmly | | 4 | Measure sensor resistance | Unplug the refrigerator and disconnect the sensor connector. With a multimeter set to Ohms, measure resistance across the two sensor pins. At room temperature (~25°C / 77°F), the Bosch refrigerator NTC should read approximately 7.1 kΩ (7,100 Ω). Open circuit (OL) or near-zero resistance confirms sensor failure | Sensor reads ~7.1 kΩ at room temperature; out-of-range confirms replacement needed | | 5 | Contact Bosch service for sensor replacement | Order the correct replacement NTC sensor for your Bosch model. Sensor replacement requires accessing the refrigerator interior and routing the new harness correctly. Contact Bosch at 1-800-944-2904 for professional service or certified technician referral | E01 resolved after NTC sensor replacement | ## Frequently Asked Questions ### Will E01 affect my food temperature? Yes. Without an accurate refrigerator compartment sensor, the control board cannot precisely regulate temperature. The refrigerator may run warmer or colder than the set point. Monitor food temperatures with a separate thermometer and move temperature-sensitive items if the compartment is outside the 34–40°F (1–4°C) safe range. ### What resistance should a Bosch refrigerator NTC sensor read? The Bosch refrigerator compartment NTC sensor reads approximately 7.6 kΩ at 20°C (68°F) and 7.1 kΩ at 25°C (77°F). The resistance decreases as temperature increases, which is characteristic of NTC sensors. An open circuit (OL) reading indicates a broken sensor wire; near-zero resistance indicates a short circuit. ### Is E01 the same as E02? No. E01 is the refrigerator compartment sensor fault, while E02 is the freezer compartment sensor fault. Both are NTC temperature sensor failures but in different compartments. The troubleshooting process is similar for both, but the sensor location and possibly the part number differ. ### How long does refrigerator NTC sensor replacement take? NTC sensor replacement is a relatively straightforward repair — typically 30–60 minutes for a trained technician. The sensor is accessed by reaching into the refrigerator interior, and the harness is routed to the control board behind a rear panel. DIY replacement is possible if you are comfortable with multimeter testing and connector handling. --- Source: Bosch 500 Series French Door Counter-Depth Smart Refrigerator service documentation. Last Updated: March 2026 ### Is it safe to keep using my Bosch b36cd50sns with error e01? If error e01 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 refrigerator 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 e01 on a Bosch b36cd50sns? Repair costs for error e01 on the Bosch b36cd50sns refrigerator 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 e01 mean on a Bosch refrigerator? Error code e01 on Bosch refrigerator models indicates Refrigerator compartment temperature sensor failure — NTC sensor open or short circuit. 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 b36cd50sns with error e01? If error e01 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 refrigerator 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 e01 on a Bosch b36cd50sns? Repair costs for error e01 on the Bosch b36cd50sns refrigerator 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 e01 mean on a Bosch refrigerator? Error code e01 on Bosch refrigerator models indicates Refrigerator compartment temperature sensor failure — NTC sensor open or short circuit. 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.