Bosch Refrigerator Error Code E2058

E2058 on a Bosch refrigerator indicates a CRC (Cyclic Redundancy Check) error related to internal counters stored in the control board's non-volatile memory. CRC is a standard data integrity verification method: the control system calculates a checksum value for stored counter data and compares it against a previously saved reference value. When these values do not match, the board concludes that the stored counter data has become corrupted or is otherwise unreliable, and it triggers this fault code.

The counters involved typically track operational data such as compressor run cycles, door open events, defrost cycle counts, and other usage metrics that the board relies on for timing and control decisions. If this data becomes corrupted, the refrigerator's control logic may not be able to perform accurate cycle management, which can affect cooling performance, defrost scheduling, and other timed functions. The error points directly to the main control board as the component responsible for storing and validating this data.

The most common causes include voltage fluctuations or power interruptions that interrupt a memory write operation, leaving counter data in a partially written and therefore invalid state. In some cases, the non-volatile memory chip on the control board degrades over time and can no longer reliably retain data between power cycles. A hard reset will sometimes allow the board to reinitialize its counters and clear the error, but if the underlying memory hardware is faulty, the error will return. Persistent recurrence of E2058 typically indicates the main control board requires replacement.