When a residential kitchen oven heats up but stalls out far below your programmed target temperature—such as maxing out at 250 or 300 degrees—the malfunction is typically caused by a partially broken heating element with a hairline fracture, a weak gas igniter that fails to keep the safety valve open, or a failing temperature sensor probe sending erroneous resistance signals to the control board. When an electric element is partially damaged, it conducts limited current and produces insufficient heat. You can troubleshoot heating limitations safely using a digital multimeter. You can verify that your corrective action is successful when inspecting components and replacing a cracked heating element or faulty sensor probe allows the oven to heat up rapidly to full baking temperatures.
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