Bosch Refrigerator Error Code E00

E00 means the TCD freezer compartment temperature sensor is reporting a value outside its valid range, specifically at or above 60°C or at or below -55°C. The control board treats these extreme readings as a sensor fault rather than a real temperature. The cause is typically a broken sensor wire, a short circuit in the sensor circuit, or a loose or corroded connector. The refrigerator cannot accurately monitor freezer temperature while this fault is active.

With a failed freezer sensor, the control board cannot accurately regulate freezer temperature, which means food safety is at risk. Your freezer may run warmer or colder than intended without reliable feedback. It is best to address the fault promptly rather than continuing to store perishables while the error is active.

A power reset by unplugging the refrigerator for a few minutes may temporarily clear the displayed code, but if the underlying sensor fault is still present, E00 will return once the control board runs its diagnostics again. A reset is useful as a first step to rule out a temporary glitch, but a persistent E00 after reset indicates a real hardware fault that needs to be diagnosed and repaired.

Some E00 causes are within reach of a confident DIYer. You can start by unplugging the refrigerator, locating the freezer temperature sensor, and carefully checking that its wiring connector is fully seated and free of corrosion. If the connector is secure and clean but the error persists, testing the sensor's resistance with a multimeter will tell you whether the thermistor itself needs replacement. Control board issues are more complex and generally call for a technician.

Repair cost depends on which component has failed. If only a connector needs reseating or cleaning, there may be no parts cost and just a service call fee, typically in the range of $75 to $150. Replacing the TCD thermistor sensor usually adds $20 to $80 in parts. If the control board is at fault, parts and labor combined can range from $200 to $400 or more depending on your location and the specific model.