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Error code reference

Bosch Range Error Code F113

Runaway oven temperature reaching 950°F while latch is locked

Bosch codesBosch range codes

Runaway oven temperature reaching 950°F while latch is locked — one or more cycle relays on power board stuck in closed position.

First step from the service manual

Double line breaker tripped-out heating.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F113 means on a Bosch range

Error code F113 on a Bosch range indicates a runaway oven temperature condition, where the oven has reached or is approaching 950°F while the door latch remains in the locked position. This situation is most commonly associated with a self-clean cycle that has gone wrong. The control board monitors oven cavity temperature continuously, and when that temperature exceeds the safe upper threshold with the latch engaged, F113 is triggered to flag a critical fault in the heating control circuit.

The root cause identified in this fault is one or more cycle relays on the power board becoming stuck in the closed position. These relays control current flow to the bake and broil elements. When a relay welds shut or fails to open on command, the heating elements continue drawing power regardless of what the control board commands, causing uncontrolled temperature rise. The power board is the component responsible for switching these relays on and off in response to signals from the main control.

The first diagnostic step when F113 appears is to check whether the double line breaker for the range has tripped. A runaway heating condition can cause the breaker to open as a protective response, which would cut power to the elements and halt further temperature increase. Confirming breaker status before handling the appliance or attempting disassembly is critical for safety. If the breaker has not tripped and the latch is still locked, do not attempt to force the door open, as the oven cavity may still be at extremely high temperature.

Source: manufacturer service documentation.

Common causes of F113

  1. 01

    Stuck closed cycle relay on power board

    Part replacement

    One or more relays on the power board have welded or fused in the closed position, allowing continuous current to flow to the heating elements even when the control signals them to stop. This is the primary cause identified for F113 and typically requires replacement of the power board.

  2. 02

    Tripped double line breaker

    Wiring / connection

    The runaway temperature event may have caused the range's dedicated double-pole circuit breaker to trip. Check the breaker panel first, as this is the first diagnostic step and can sometimes mimic a control fault if power is partially interrupted.

  3. 03

    Failed oven temperature sensor

    Part replacement

    If the oven temperature sensor is reading incorrectly or has failed open, the control board may not receive accurate temperature data, allowing heating to continue beyond safe limits without triggering a normal shutoff.

  4. 04

    Door latch assembly malfunction

    Part replacement

    If the latch motor or latch switch fails to properly communicate its locked or unlocked status to the control board, the board may mismanage the self-clean heating cycle, contributing to uncontrolled temperature conditions.

  5. 05

    Main control board fault

    Part replacement

    In some cases, the main control board itself may fail to send the correct shutoff signals to the power board relays during or after a self-clean cycle, resulting in sustained heating beyond the intended range.

See the test procedure for each cause

Frequently asked questions about F113

What does F113 mean on a Bosch range?
F113 on a Bosch range means the oven temperature reached a runaway condition, approaching 950°F, while the door latch was in the locked position. The fault points specifically to one or more cycle relays on the power board being stuck in the closed position, causing the heating elements to run without shutting off. This typically occurs during or after a self-clean cycle and is treated as a critical safety fault.
Is it safe to use my Bosch range when it shows F113?
No, the oven should not be used while F113 is active or unresolved. A stuck relay on the power board can cause the heating elements to run without control, creating a serious fire hazard and potential damage to the appliance. If the fault appeared during a self-clean cycle, allow the oven to cool completely before inspecting anything, and verify the circuit breaker status before proceeding.
Will resetting the breaker or unplugging the range clear the F113 code?
Resetting the breaker or cycling power may temporarily clear the error display, but it will not fix the underlying problem. If a relay on the power board is physically welded shut, the fault condition will return and uncontrolled heating can resume. The faulty power board must be diagnosed and replaced before the oven is considered safe to operate.
How do I fix F113 on a Bosch range?
The first step is to check whether the range's double-pole circuit breaker has tripped and reset it if needed. After the oven has cooled completely, the power board should be inspected for relay failure, which typically requires replacing the board. The oven temperature sensor and door latch assembly should also be tested to rule out contributing faults. Given the high-temperature nature of this fault, professional diagnosis is strongly recommended.
How much does it cost to repair a Bosch range showing F113?
Repair costs vary depending on which components have failed. A replacement power board for a Bosch range typically costs between $150 and $350 for the part alone, with labor adding another $100 to $200 depending on your area and the service provider. If additional components like the temperature sensor or door latch assembly also need replacement, total costs could range from $250 to $600 or more.

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