An oven that won't heat is one of the most common range problems, and it can affect both gas and electric models. When the oven fails to reach or maintain temperature, it's usually caused by a failed heating component, a faulty sensor, or an electrical control issue.

Below are the most common causes of an oven not heating, along with step-by-step guidance to help you diagnose and repair the problem safely.

1. Igniter Failure (Gas Ranges)

Most Common Solution

Why It Causes the Oven Not to Heat

The igniter is responsible for both opening the gas safety valve and lighting the gas in the oven burner. When the igniter weakens, it may glow but no longer draw enough current to open the valve, so gas is never released and the oven stays cold.

Common causes include:

• Igniter worn out from normal use over time
• Igniter cracked or physically damaged
• Carbon or food debris buildup interfering with ignition

Symptoms include:

• Igniter glows but oven burner never lights
• Igniter glows weakly or takes much longer than usual
• Clicking sound with no flame produced

How to Replace the Oven Igniter

1. Turn off power to the range at the breaker before starting.
2. Remove the oven racks and the bottom panel to access the burner assembly.
3. Locate the igniter near the rear of the oven burner tube.

Disconnect the wire harness and mounting screws securing the igniter.

Remove the old igniter and install the new one in the same position.

Reconnect the wire harness and secure the mounting screws.

Reinstall the bottom panel and oven racks.

Restore power and test the oven to confirm consistent ignition.

Find Oven Igniter Parts
Enter your range model number to locate the correct replacement igniter for your unit.

2. Bake Element Burned Out (Electric Ranges)

Why It Causes the Oven Not to Heat

The bake element is the exposed coil at the bottom of an electric oven that produces heat during baking. Over time, the metal coil can weaken and burn through at one point, breaking the electrical circuit so the element can no longer heat.

Common causes include:

• Element coil worn out from years of heating cycles
• Food spills or grease causing the coil to corrode
• Physical damage from contact with cookware

Symptoms include:

• Visible cracks, blisters, or a break in the element coil
• Sparking or arcing at the element during use
• Oven does not heat at all despite display showing it is on

How to Replace the Bake Element

1. Turn off power to the range at the breaker before starting.
2. Remove the oven racks and locate the mounting screws holding the bake element in place.

Remove the mounting screws and gently pull the element forward to expose the wire terminals.

Disconnect the wire terminals from the back of the element.

Connect the wire terminals to the new bake element.

Push the element back into place and reinstall the mounting screws.

Reinstall the oven racks, restore power, and run a test bake cycle.

3. Faulty Temperature Sensor

Why It Causes the Oven Not to Heat

The temperature sensor monitors the oven's internal temperature and reports it to the control board, which uses that reading to cycle the heating elements on and off. If the sensor fails or shorts out, the control board may never signal the elements to turn on at all.

Common causes include:

• Sensor probe has shorted internally
• Sensor touching the oven wall, causing inaccurate readings
• Damaged or corroded sensor wiring

Symptoms include:

• Oven does not heat, or a fault code appears on the display
• Oven temperature reads far higher or lower than the actual temperature
• Oven heats but shuts off early or cycles erratically

How to Check and Replace the Temperature Sensor

1. Turn off power to the range at the breaker before starting.
2. Locate the sensor probe mounted on the rear interior wall of the oven.

Remove the mounting screws and disconnect the sensor's wire harness.

Test the sensor's resistance with a multimeter and compare to the manufacturer's specification.

Install the new sensor and reconnect the wire harness.

Secure the mounting screws, restore power, and run a test bake cycle.

4. Oven Control Board Malfunction

Why It Causes the Oven Not to Heat

The oven control board sends voltage to the igniter, bake element, or broil element based on the selected temperature. If a relay on the board fails, the board may never send power to the heating components even though the display and controls appear to work normally.

Common causes include:

• Failed relay on the control board
• Power surge or electrical damage to the board
• Corroded or loose wire connections at the board

Symptoms include:

• Display and buttons work normally, but oven never heats
• Oven works intermittently or shuts off unexpectedly
• Burning smell or visible damage on the control board

How to Check and Replace the Control Board

1. Turn off power to the range at the breaker before starting.
2. Access the control board, typically located behind the rear control panel or below the cooktop.

Inspect the board visually for burn marks, swollen capacitors, or corrosion.

Disconnect all wire harnesses from the board, noting their positions.

Remove the mounting screws and take out the old control board.

Install the new control board and reconnect all wire harnesses.

Restore power and test the oven through a full heating cycle.

Find Oven Control Board Parts
Enter your range model number to locate the correct replacement control board for your unit.

Preventing Oven Heating Problems

Routine care can help you catch heating issues early and extend the life of your range. Consider the following preventive steps:

• Clean spills and grease promptly to protect the igniter and elements
• Avoid letting cookware touch the bake or broil elements
• Check the igniter's glow color and time periodically on gas ranges

Have the temperature sensor checked if bake results seem inconsistent

Ensure the oven vent is not blocked by cookware or foil

Schedule a professional inspection if the control board shows signs of wear

Find the Correct Range Replacement Part

An oven that won't heat can result from a failed igniter, a burned-out bake element, a faulty temperature sensor, or a malfunctioning control board. Identifying which component has failed will help you get the right replacement part and restore your oven's performance.

Always verify your range model number before ordering any replacement part to ensure a proper fit and reliable performance.

At Authentic Appliance Parts, we provide quality range replacement parts and repair resources to help you diagnose range problems and complete repairs with confidence.