Bosch Cooktop Error Code ER 13

ER 13 indicates that the cooktop's control board has detected invalid or corrupted data in the EEPROM, the small memory chip that stores the unit's operational settings and calibration values. The cooktop displays this fault to prevent unsafe operation when it cannot read reliable configuration data. The cause can range from a power surge to physical wear on the memory chip itself.

You should not attempt to operate the cooktop while ER 13 is active. The error indicates the control board cannot verify its own configuration data, which means the unit may not respond predictably to controls or safety shutoffs. Discontinue use until the fault is diagnosed and resolved.

If the error clears with a reset and does not return, there is no parts cost involved. If the control board requires replacement, parts and labor costs typically range from around $200 to $500 or more depending on the specific model and local labor rates. Getting a diagnostic estimate from a certified technician before committing to repair is recommended, especially on older units where the repair cost may approach replacement value.

You can attempt a hard reset by disconnecting the cooktop from power at the circuit breaker for several minutes, then restoring power. If the error clears and does not return, no further action may be needed. If the error persists after a reset, the control board likely needs professional diagnosis and replacement, which requires a technician familiar with Bosch cooktop electronics.

A power reset will sometimes clear ER 13 if the corruption was caused by a one-time event like a power interruption during startup. To reset, turn off the circuit breaker supplying the cooktop, wait at least five minutes, and restore power. If the error returns after the reset, the EEPROM or control board has likely sustained lasting damage and will need to be replaced.