How to fix an oven that won't reach the right temperature

What we checked before recommending anything

We reviewed appliance repair documentation from major manufacturers — including GE, Whirlpool, and Frigidaire — alongside independent repair training resources and community repair data from appliance technicians. Rather than defaulting to "call a professional," we applied the standard any competent repair technician would use: start with the most common, most testable cause and work outward only if it doesn't pan out.

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  Manufacturer service documentation reviewed GE, Whirlpool, and Frigidaire all confirm that a failed bake element is the single most common cause of an oven not reaching temperature in electric ranges, and that it is a homeowner-replaceable part.
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  Temperature sensor resistance values verified Appliance repair training sources confirm that a functional oven RTD (resistance temperature detector) sensor reads approximately 1,080–1,100 ohms at room temperature — a standard that can be verified with any basic multimeter.
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  Calibration offset capability confirmed across brands Product manuals from the leading oven brands confirm that most modern ovens — both gas and electric — allow users to offset the thermostat calibration by up to 35°F through the settings menu, with no tools required.
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  Gas-specific causes cross-checked For gas ovens, a faulty igniter is responsible for temperature problems in the majority of cases — gas igniter failure is well-documented by Whirlpool and RepairClinic as the primary culprit, and igniters are also homeowner-replaceable parts.

There's more than one fix — here's how to choose the right one for your situation

The right solution depends on whether your oven is electric or gas, how far off the temperature is, and what a quick inspection reveals — so we've laid out every realistic path honestly.

What people try first that wastes time and money

These approaches are popular because they feel logical — but they either don't address the real cause or can make diagnosis harder.

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  Guessing and replacing parts at random — Buying a new temperature sensor when the problem is actually a burned-out bake element (or vice versa) wastes $30–$60 and delays the fix by days; always confirm the diagnosis with a thermometer and multimeter reading before ordering anything.
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  Relying on the oven's preheat indicator light as proof it's at temperature — The preheat chime and indicator light signal that the oven has reached its internal sensor target — but if the sensor is reading inaccurately, the oven will announce it's ready while the actual cavity temperature is still 50°F too low; always verify with a physical thermometer.
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  Immediately calling for a service visit without self-diagnosing first — Many technicians report that a significant portion of oven service calls end with a simple recalibration or a $25 element swap that the homeowner could have handled — paying a $100+ diagnostic fee for something this straightforward is a common and avoidable expense.
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  Cranking the temperature dial higher to compensate — Cooking at 400°F when you need 350°F because your oven "runs cold" is a workaround that produces inconsistent results and doesn't account for the fact that temperature offset is rarely uniform across the range — something that runs 30°F cold at 350°F may run 50°F cold at 425°F.