--- title: "Oven runs hot or cold" description: "Thermador oven runs hot or cold — baking that has gone wrong at the same setting you have always used." url: "https://thermadormiami.support/symptoms/oven-temperature-wrong/" date_modified: "2026-08-18" Appliance type: "Professional ranges, Wall ovens & steam ovens" --- # Oven runs hot or cold Symptom # Thermador oven runs hot or cold Baking that has gone wrong at the same setting you have always used. A thermometer in the middle of the oven settles in twenty minutes what an argument about it never will. - **From $95** diagnostic, credited to the repair - **59** cities and neighborhoods covered - **OEM** parts available on order - **In writing** the price, before anything is opened ## Book a diagnostic visit Your model number and a line about what it is doing is enough to get started. Your details stay private. No spam, ever. Five ordinary causes ## What this usually turns out to be Cheapest and commonest first, which is also the order we check them in. They sit hundreds of dollars apart, and only the unit settles which one is yours. - The cavity sensor reading short The control believes the oven is colder than it is and overheats to compensate. Published as its own condition, per cavity. [ Oven element and sensor repair from $185 ](https://thermadormiami.support/services/oven-element-and-sensor-repair/) ### The cavity sensor reading short The control believes the oven is colder than it is and overheats to compensate. Published as its own condition, per cavity. - Calibration drift A small consistent offset with no code at all. It is an adjustment rather than a part, and it is worth doing rather than living with. [ Oven element and sensor repair from $185 ](https://thermadormiami.support/services/oven-element-and-sensor-repair/) ### Calibration drift A small consistent offset with no code at all. It is an adjustment rather than a part, and it is worth doing rather than living with. - The meat probe A probe reading out of range has its own codes and can interrupt a bake that is otherwise fine. Unplug it and see — the cheapest test on this page. [ Oven element and sensor repair from $185 ](https://thermadormiami.support/services/oven-element-and-sensor-repair/) ### The meat probe A probe reading out of range has its own codes and can interrupt a bake that is otherwise fine. Unplug it and see — the cheapest test on this page. - Convection fan or its element Convection that is not circulating leaves an oven hot at the top and cool at the rack. That reads as “wrong temperature” and is a different repair. [ Oven element and sensor repair from $185 ](https://thermadormiami.support/services/oven-element-and-sensor-repair/) ### Convection fan or its element Convection that is not circulating leaves an oven hot at the top and cool at the rack. That reads as “wrong temperature” and is a different repair. - A relay stuck closed An element that stays powered when it should not. This is what the safety-limit condition is watching for, and it is the reason that code is urgent. [ Control board replacement from $340 ](https://thermadormiami.support/services/control-board-replacement/) ### A relay stuck closed An element that stays powered when it should not. This is what the safety-limit condition is watching for, and it is the reason that code is urgent. In five minutes ## Before you call anybody None of it needs tools, and all of it makes the visit shorter. - 01 Put a thermometer in the middle Set 350°F, wait twenty minutes past the preheat beep, and read it. Everything after this is easier once there is a number. ### Put a thermometer in the middle Set 350°F, wait twenty minutes past the preheat beep, and read it. Everything after this is easier once there is a number. - 02 Unplug the meat probe Then bake without it. Probe codes are cheap to clear and they mimic an oven that cannot hold temperature. ### Unplug the meat probe Then bake without it. Probe codes are cheap to clear and they mimic an oven that cannot hold temperature. - 03 Note whether it is even Hot at the back, cool at the front, or fine at one rack and not another — that is airflow, not calibration. ### Note whether it is even Hot at the back, cool at the front, or fine at one rack and not another — that is airflow, not calibration. - 04 Photograph any code before cutting power Especially anything in the hundreds. The digits carry the cavity as well as the condition. ### Photograph any code before cutting power Especially anything in the hundreds. The digits carry the cavity as well as the condition. How it shows up ## What people describe when they call - “Everything browning too fast, or not at all” - “A consistent offset at every setting” - “A code in the E1 or E2 hundreds” A shortcut ## Narrow it down before anybody arrives A description of the behaviour leaves a few possible causes. A code names the subsystem before anybody opens anything, which is why it is worth photographing before it clears. If the display is showing something - [ E104 Cavity sensor shorted ](https://thermadormiami.support/error-codes/error-code-e104-oven/) - [ E115 Hot with door unlocked ](https://thermadormiami.support/error-codes/error-code-e115-oven/) - [ E122 Probe reads too hot ](https://thermadormiami.support/error-codes/error-code-e122-oven/) - [ E123 Probe reads too cold ](https://thermadormiami.support/error-codes/error-code-e123-oven/) Photograph it before it clears — codes do not wait. [ Search the full code list ](https://thermadormiami.support/error-codes/) In more detail ## About Thermador oven runs hot or cold ### The fastest diagnosis is the code A shorted temperature sensor reads cold to the control, which then keeps heating — so an oven that runs hot and an oven that shows a sensor code are frequently the same appliance. At the safety limit that becomes E115, and that one is not a wait-and-see. ### The sensor is the usual suspect, and it fails in two directions An open sensor gives the control nothing and the oven will not heat. A shorted one tells the control the oven is cold, so it keeps heating — and the result is scorched food, then a safety condition when the cavity passes what it is allowed to reach unlocked. Those are opposite symptoms from the same small part, and the published codes tell them apart. ### When it is airflow rather than temperature Uneven results — one rack fine, another not, or the back browning faster than the front — is usually convection rather than calibration. That is a fan or its element, and no amount of adjusting the offset will fix it. This article is based on: - Official manufacturer documentation - Internal repair procedures - Technician repair history - Company quality standards Before you book ## Questions about thermador oven runs hot or cold A small offset is common and it is adjustable. What is not normal is a change: an oven that has drifted since last year is telling you something, and a thermometer will show whether it is ten degrees or fifty. No. That means the cavity is hotter than the design allows with the door unlocked. If it is heating with nothing selected, switch it off at the breaker and call. It is the one condition here we would rather you did not wait on. Possible, which is why it is worth using a decent one and checking it in boiling water first. It is still a better witness than a cake. 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