Bosch Refrigerator Error Code E01

E01 means the refrigerator compartment temperature sensor is sending a reading that falls outside the accepted range, specifically 60°C or above, or -55°C or below. The control board treats this as a sensor fault rather than an actual temperature condition. The root cause is typically a broken wire, a short circuit in the sensor circuit, or a failed sensor itself. The refrigerator may not regulate cooling correctly while this fault is active.

Operating the refrigerator with an active E01 code is not recommended for extended periods. Because the control board cannot trust the compartment temperature reading, it may not regulate cooling accurately, which could lead to food spoilage. It is best to address the fault promptly and transfer perishables to a backup refrigerator or cooler in the meantime.

If only the RC temperature sensor needs replacement, parts typically cost in the range of $20 to $60 depending on the specific model. Adding professional labor, the total repair cost generally falls between $100 and $250. If the wiring harness or control board is also involved, costs can increase significantly, so getting a diagnostic assessment before committing to a repair is advisable.

A knowledgeable DIYer can perform basic diagnostic steps such as inspecting the wiring harness, checking connector contacts, and testing sensor resistance with a multimeter. If the sensor itself has failed, replacing it is a straightforward repair involving disconnecting the old sensor and plugging in a new one. However, if the fault traces back to the control board or involves wiring repairs inside the sealed cabinet, professional service is recommended.

A power reset, performed by unplugging the refrigerator for several minutes and restarting it, may temporarily clear the E01 code. However, if the underlying fault in the sensor circuit still exists, the error will return once the control board re-evaluates the sensor signal. A reset alone is not a repair and should only be used to confirm whether the fault is intermittent or persistent.