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Error code reference

GE Range Error Code ER 23

MTwisT Control fault

GE codesGE range codes

MTwisT Control fault: PWM-frequency out of limit.

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What ER 23 means on a GE range

ER 23 on a GE range indicates a fault within the MTwisT control system, specifically related to PWM (pulse-width modulation) frequency operating outside of its acceptable limits. PWM is the method the control board uses to regulate power delivery to heating elements or induction coils by rapidly switching the circuit on and off at a precise frequency. When that frequency drifts too high or too low beyond the designed operating range, the control detects the deviation and triggers this fault code to prevent unsafe or erratic heating behavior.

The MTwisT control is an integrated power management and user interface system used in certain GE ranges. It handles the communication between the touch controls, the main control board, and the power delivery components. A PWM frequency fault typically points to a problem within the control board itself, a failure in the power switching components (such as triacs or IGBTs on induction models), or a communication breakdown between control modules that causes the frequency signal to become corrupted or unstable.

External factors can also contribute to this fault. Voltage irregularities from the home supply, a loose or corroded wiring connection in the control circuit, or thermal stress on the board from inadequate ventilation can all cause PWM output to behave erratically. Because the fault is tied to a frequency measurement that is out of defined limits, simply resetting the range may temporarily clear the code, but the underlying electrical or component issue will likely cause it to return.

Source: manufacturer service documentation.

Common causes of ER 23

  1. 01

    Faulty main control board

    Part replacement

    The control board generates the PWM signal, and an internal component failure such as a damaged triac, IGBT, or driver circuit can cause the frequency to fall outside acceptable limits. Inspect the board for burn marks, swollen capacitors, or visible damage.

  2. 02

    MTwisT module communication failure

    Wiring / connection

    If communication between the MTwisT control module and the main board is interrupted or corrupted, the PWM frequency data can register as out of range. Check the wiring harness connectors between control modules for corrosion, looseness, or damaged pins.

  3. 03

    Loose or corroded wiring connections

    Wiring / connection

    Poor electrical connections in the control circuit can cause signal instability that reads as a PWM frequency fault. Inspect all connectors on the control board and power delivery path for signs of arcing, corrosion, or loose terminals.

  4. 04

    Unstable or improper supply voltage

    Wiring / connection

    Voltage irregularities from the household electrical supply can disrupt the control board's ability to maintain a stable PWM frequency. Verify that the range is receiving the correct supply voltage at the terminal block using a multimeter.

  5. 05

    Thermal damage to control electronics

    Part replacement

    Overheating caused by poor ventilation or a nearby component failure can degrade the control board's frequency-generating circuitry over time. Check that ventilation pathways around the control area are clear and that no adjacent components have failed.

See the test procedure for each cause

Frequently asked questions about ER 23

What does ER 23 mean on a GE range?
ER 23 indicates a fault in the MTwisT control system where the PWM frequency, the signal used to regulate power delivery to heating elements, has gone outside its acceptable operating limits. The range detects this deviation and shuts down to prevent unsafe heating conditions. This is generally a control board or wiring issue rather than a problem with the heating elements themselves.
Can I fix ER 23 on my GE range myself?
Some basic checks are within reach for a knowledgeable DIYer, such as inspecting wiring harness connectors for corrosion or looseness and verifying proper supply voltage at the terminal block. However, if the fault traces back to the MTwisT control module or the main control board, component-level repair or board replacement requires working with line voltage and should be handled by a qualified technician. Attempting control board repairs without proper training and tools carries a serious risk of electric shock.
Is it safe to use my GE range while ER 23 is displayed?
It is not recommended to continue using the range while this fault is active. ER 23 indicates the power regulation system is not operating within safe frequency limits, which could result in erratic or uncontrolled heating. Discontinue use until the fault has been properly diagnosed and resolved.
Will resetting my GE range clear the ER 23 error?
Resetting the range by cycling power at the breaker may temporarily clear the ER 23 code, but if the underlying cause is a failing control board component, a wiring issue, or a voltage problem, the error will almost certainly return with continued use. A reset alone is not a repair and should only be used as a first diagnostic step to determine whether the fault is intermittent or persistent.
How much does it cost to repair a GE range showing ER 23?
Repair costs vary depending on the root cause. If the issue is a loose wiring connection, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the main control board or MTwisT module requires replacement, parts alone can range from $150 to $400 or more depending on the model, with labor adding to the total. Getting a diagnostic assessment before committing to parts replacement is advisable.

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