--- title: "Oven not heating" description: "Bosch oven not heating — an oven that never warms up, or one that heats but sits well below the temperature it was set to." url: "https://esbosch.djwp.xyz/symptoms/oven-not-heating/" date_modified: "2026-08-21" Appliance type: "Ranges, Wall ovens" --- # Oven not heating Symptom # Bosch oven not heating An oven that never warms up, or one that heats but sits well below the temperature it was set to. Those are different problems with different parts and quite different figures. - **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 temperature sensor Reads wrong and the oven heats to the wrong point. Has its own published code, and it is one of the cheaper repairs here. [ Oven element & sensor repair from $165 ](https://esbosch.djwp.xyz/services/oven-element-and-sensor-repair/) ### The temperature sensor Reads wrong and the oven heats to the wrong point. Has its own published code, and it is one of the cheaper repairs here. - Calibration An oven cool by the same amount every time is often adjustable rather than broken. The cheapest outcome on this page and it is checked before anything is proposed. [ Oven element & sensor repair from $165 ](https://esbosch.djwp.xyz/services/oven-element-and-sensor-repair/) ### Calibration An oven cool by the same amount every time is often adjustable rather than broken. The cheapest outcome on this page and it is checked before anything is proposed. - A heating element Bake or broil. Usually visible — a blister, a break, or a bright spot where it burned through. [ Oven element & sensor repair from $165 ](https://esbosch.djwp.xyz/services/oven-element-and-sensor-repair/) ### A heating element Bake or broil. Usually visible — a blister, a break, or a bright spot where it burned through. - A gas igniter that has weakened On gas ovens they fail slowly: the oven lights later and later until it stops lighting. Predictable and a known part. [ Gas burner & igniter repair from $145 ](https://esbosch.djwp.xyz/services/gas-burner-and-igniter-repair/) ### A gas igniter that has weakened On gas ovens they fail slowly: the oven lights later and later until it stops lighting. Predictable and a known part. - A relay on the control board The board is what switches the elements. When a relay goes, the oven behaves as though the element has, and only measurement tells them apart. [ Control board replacement from $310 ](https://esbosch.djwp.xyz/services/control-board-replacement/) ### A relay on the control board The board is what switches the elements. When a relay goes, the oven behaves as though the element has, and only measurement tells them apart. In five minutes ## Before you call anybody None of it needs tools, and all of it makes the visit shorter. - 01 Put an oven thermometer in it At 350 and again at 450. An oven cool by the same amount at both is a calibration story; one that is fine at 450 and cool at 350 is not. ### Put an oven thermometer in it At 350 and again at 450. An oven cool by the same amount at both is a calibration story; one that is fine at 450 and cool at 350 is not. - 02 Look at the elements while it preheats They should glow evenly. A blister, a break or a section that stays dark is your answer. ### Look at the elements while it preheats They should glow evenly. A blister, a break or a section that stays dark is your answer. - 03 Cut power for five minutes At the breaker. Photograph any code first, because it will be gone afterwards. ### Cut power for five minutes At the breaker. Photograph any code first, because it will be gone afterwards. - 04 Check the clock and any mode A timed bake that has ended, a sabbath mode, or a demo mode from the showroom floor will all leave an oven that refuses to heat. ### Check the clock and any mode A timed bake that has ended, a sabbath mode, or a demo mode from the showroom floor will all leave an oven that refuses to heat. How it shows up ## What people describe when they call - “No heat at all” - “Runs cool by a consistent amount” - “Takes far longer to preheat than it used to” Two shortcuts ## Narrow it down before anybody arrives A description of the behaviour leaves a few possible causes. A code names the subsystem, and the model number says which parts to bring. Either one shortens the visit; both together usually settle it. If the display is showing something - [ e005 Boards not talking ](https://esbosch.djwp.xyz/error-codes/error-code-e005/) - [ E100 Electronics ](https://esbosch.djwp.xyz/error-codes/error-code-e100/) - [ e101 Temperature sensor ](https://esbosch.djwp.xyz/error-codes/error-code-e101/) Photograph it before it clears — codes do not wait. [ Search the full code list ](https://esbosch.djwp.xyz/error-codes/) If there is no code at all The data plate is inside the cabinet, upper left wall or behind the grille. [ All models ](https://esbosch.djwp.xyz/models/) In more detail ## About Bosch oven not heating ### The fastest diagnosis is the code These ovens publish a code for the temperature sensor specifically, which is unusually precise. If you have one, photograph it before cutting power — several of these codes clear at the breaker and are then gone for good. ### Never hot, or never hot enough **No heat at all** points at an element, a relay, or on a gas oven the igniter. **Heat, but wrong** points at the sensor or at calibration. The second pair are far apart in price and only a measurement separates them, which is why a thermometer in the cavity is worth more than any description. ### What the codes add here These ovens are unusually specific: the temperature sensor has its own code, the touch panel has its own, and communication between the two boards has its own. Several clear with five minutes off at the breaker — and it is always worth trying, because a code that survives that is a code that means something. This article is based on: - Official manufacturer documentation - Internal repair procedures - Technician repair history - Company quality standards Before you book ## Questions about bosch oven not heating That is the calibration conversation, and many of these ovens can be adjusted. It is the cheapest thing on this page and we check it first. Useful — that separates the two elements and their relays. Tell us which one when you book. A showroom setting where the display works and nothing heats. It arrives with appliances bought from a floor model, and it is cleared with a specific sequence rather than a repair. 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