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Error code reference

Jenn-Air Range Error Code 1c8c

EEPROM CRC error in user options data.

Jenn-Air codesJenn-Air range codes

EEPROM CRC error in user options data.

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What 1c8c means on a Jenn-Air range

The 1c8c error code on a Jenn-Air range indicates an EEPROM CRC (Cyclic Redundancy Check) error specifically within the user options data section. The EEPROM (Electrically Erasable Programmable Read-Only Memory) is a small non-volatile memory chip located on the main control board. It stores persistent settings such as clock preferences, sabbath mode configurations, temperature calibration offsets, and other user-defined options. A CRC is a mathematical checksum used to verify data integrity. When the control board reads the user options data from the EEPROM and the calculated checksum does not match the stored value, it triggers this fault code.

This type of error most commonly results from data corruption within the EEPROM itself. Corruption can occur due to power surges or sudden power interruptions during a write cycle, gradual degradation of the memory chip over time, or voltage irregularities on the control board. In some cases, the error may appear after a brief power outage and could potentially clear after a hard reset. However, if the memory cell itself has physically degraded or the control board has sustained damage, the fault will persist regardless of resets.

Because the error is isolated to the user options data partition rather than the core operational firmware, the range may still function in some capacity, but behavior could be unpredictable. Settings may revert to defaults, fail to save, or cause the control board to enter a locked or fault state. Resolving this fault typically requires either a successful power reset to restore default EEPROM values, or replacement of the main control board if the memory corruption is permanent.

Source: manufacturer service documentation.

Common causes of 1c8c

  1. 01

    Power surge or interruption corrupting EEPROM data

    Wiring / connection

    A sudden loss of power or a voltage spike during a write cycle can corrupt the user options data stored in the EEPROM. This is the most common trigger and may clear after a hard reset.

  2. 02

    Degraded or failed EEPROM memory chip

    Part replacement

    EEPROM chips have a finite number of write cycles and can degrade over time. If the memory cell storing user options data has worn out, the CRC error will persist even after resets.

  3. 03

    Faulty or failing main control board

    Part replacement

    The EEPROM is integrated into or closely associated with the main control board. Board-level failures such as damaged traces, failed capacitors, or voltage irregularities can cause persistent data corruption.

  4. 04

    Unstable household voltage supply

    Wiring / connection

    Chronic undervoltage or overvoltage conditions at the range's power connection can stress the control board and contribute to repeated EEPROM write errors. Check the outlet voltage and inspect the power cord and terminal block.

See the test procedure for each cause

Frequently asked questions about 1c8c

What does 1c8c mean on a Jenn-Air range?
The 1c8c code indicates an EEPROM CRC error in the user options data on the main control board. The Cyclic Redundancy Check failed, meaning the data stored in the EEPROM memory does not match its expected checksum. This points to corrupted or unreadable settings data, which can result from a power surge, a power interruption, or a degraded memory chip. The range may continue to operate in some capacity, but settings and behavior can become unreliable.
Can I fix the 1c8c error myself without calling a technician?
The first step you can take yourself is a hard reset: disconnect the range from power for at least 5 minutes, then restore power and check if the error clears. If the corruption was caused by a brief power event, this may restore normal operation. If the error returns immediately or persists, the control board likely has a hardware fault and professional diagnosis or board replacement is required.
Is it safe to use my Jenn-Air range while the 1c8c error is active?
Because this error involves corrupted user settings data rather than core safety systems, the range may still heat and operate in some modes. However, unpredictable control board behavior is a concern, and settings may not save or apply correctly. It is advisable to avoid using the range for unattended cooking until the fault is resolved, and to monitor the appliance closely if you do use it before repair.
Will resetting the range clear the 1c8c error code?
A power reset by unplugging the range for several minutes can clear the error if the EEPROM data was corrupted by a temporary power event and the memory chip itself is still functional. The reset allows the board to reinitialize the user options data with default values. If the EEPROM or control board is physically damaged, the error will return after the reset and the board will need to be replaced.
How much does it cost to repair a Jenn-Air range showing the 1c8c error?
If only a hard reset is needed, there is no parts cost involved. If the main control board requires replacement, parts typically range from $150 to $400 or more depending on the specific model, with labor adding $100 to $200 if a technician performs the repair. Obtaining a quote from an authorized service center before ordering parts is recommended, as control board prices vary significantly by model.

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