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Error code reference

GE Range Error Code ER 13

MTwisT Control fault

GE codesGE range codes

MTwisT Control fault: Invalid EPROM data.

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What ER 13 means on a GE range

ER 13 on a GE range indicates a fault within the MTwisT control system specifically related to invalid or corrupted EPROM data. The EPROM (Erasable Programmable Read-Only Memory) is a non-volatile memory chip embedded in the control board that stores critical operational parameters, calibration data, and firmware instructions the control board needs to function correctly. When the MTwisT control detects that the data stored in this memory is invalid, unreadable, or does not match expected values, it triggers ER 13 to prevent unsafe or erratic operation.

The MTwisT control is the primary electronic control module governing the range's functions, including burner output, oven temperature regulation, and user interface responses. A corrupted or failed EPROM means the control board cannot reliably interpret its own programmed instructions, which can cause unpredictable behavior across all range functions. This type of fault is typically not caused by external wiring or sensors but originates within the control board itself.

Common triggers for EPROM data corruption include power surge events, voltage spikes during thunderstorms or utility fluctuations, gradual failure of the memory chip itself due to age, or a manufacturing defect in the chip. In some cases, a momentary power interruption during a firmware or data write cycle can leave the EPROM in a partially written, invalid state. Because the fault is internal to the control board, replacement of the control board assembly is typically the required repair rather than any external component swap.

Source: manufacturer service documentation.

Common causes of ER 13

  1. 01

    Failed or corrupted EPROM chip on the control board

    Part replacement

    The EPROM chip itself has degraded or its stored data has become corrupted over time, a common end-of-life failure for older control boards. This is the most likely cause and requires control board replacement.

  2. 02

    Power surge or voltage spike

    Part replacement

    A sudden voltage spike from a lightning strike, utility event, or power restoration after an outage can corrupt the data stored in the EPROM. If the error appeared after a power event, the control board likely sustained damage.

  3. 03

    Interrupted power during a write cycle

    Wiring / connection

    If power was lost at the precise moment the control board was writing data to the EPROM, the memory can be left in an invalid state. A power reset may clear this in rare cases, but board replacement is often still needed.

  4. 04

    Manufacturing defect in the control board

    Part replacement

    In some cases, the EPROM arrives from production with a defect or was improperly programmed, causing the control to report invalid data from first use or shortly after installation.

See the test procedure for each cause

Frequently asked questions about ER 13

What does ER 13 mean on a GE range?
ER 13 indicates that the MTwisT control board has detected invalid or corrupted data in its EPROM memory chip. The EPROM stores the core operating instructions for the control system, and when that data is unreadable or invalid, the control halts normal operation and displays this fault. The issue is internal to the control board rather than caused by an external sensor or wiring problem.
Can I fix ER 13 on my GE range myself?
In most cases, resolving ER 13 requires replacing the control board assembly, as the fault originates inside the board's EPROM chip. If the error appeared after a power outage, you can try cycling the power at the breaker for several minutes to see if it clears, but this rarely resolves true EPROM corruption. A technician can confirm the diagnosis and source the correct replacement control board.
Is it safe to use my GE range while ER 13 is displayed?
No, you should not attempt to use the range while ER 13 is active. The control board is reporting that it cannot reliably interpret its own operating instructions, which means burner or oven output could behave unpredictably. Discontinue use until the control board has been inspected and replaced if necessary.
How much does it cost to repair ER 13 on a GE range?
Repair costs depend on the specific control board part and labor rates in your area. Control board parts for GE ranges typically range from $150 to $400 or more depending on the model, and professional labor can add another $100 to $200. It is worth comparing the total repair estimate against the age and condition of the range before proceeding.
Will resetting my GE range clear the ER 13 error code?
A power reset by turning off the circuit breaker for five to ten minutes is worth attempting as a first step, since a momentary power interruption during a write cycle can occasionally be recovered this way. However, if the EPROM chip itself has failed or was damaged by a power surge, a reset will not clear the fault and the control board will need to be replaced. If the error returns immediately after resetting, board replacement is the appropriate next step.

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