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Error code reference

Gaggenau Oven Error Code F13

Food temperature sensor NT 50 short circuit at parallel resistance of electronics or food temperature sensor.

Gaggenau codesGaggenau oven codes

Food temperature sensor NT 50 short circuit at parallel resistance of electronics or food temperature sensor.

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What F13 means on a Gaggenau oven

The F13 error code on a Gaggenau oven indicates a short circuit condition detected in the food temperature sensor circuit, specifically the NT 50 probe. This fault is triggered when the electronics detect a parallel resistance anomaly across the sensor circuit, meaning the resistance value being read is abnormally low, consistent with a short circuit rather than the expected thermistor behavior. The NT 50 is a food probe sensor used to monitor the internal temperature of food during cooking, and its resistance changes predictably with temperature. When the control electronics detect a resistance reading that falls outside the expected operating range due to a short, the F13 code is logged and cooking operations are typically interrupted.

The fault can originate from two distinct locations: the sensor probe itself or the parallel resistance within the electronic control board. A physically damaged probe, a compromised cable, or moisture intrusion into the probe connector can create a short circuit path, causing the resistance to drop to near-zero values. Alternatively, a failure on the electronics board, such as a failed resistor or solder joint in the sensor monitoring circuit, can produce the same erroneous low-resistance reading without any fault in the probe itself.

Diagnosis requires isolating the two possible fault points. Disconnecting the NT 50 probe from the control board and measuring the probe resistance with a multimeter allows a technician to determine whether the short exists in the probe assembly or in the board circuitry. A correctly functioning NT 50 probe will show a measurable thermistor resistance value at room temperature. A reading near zero ohms with the probe disconnected points to an internal board fault.

Source: manufacturer service documentation.

Common causes of F13

  1. 01

    Damaged or faulty NT 50 food probe

    Part replacement

    Physical damage to the probe tip, cable, or connector can create a short circuit within the probe assembly. Inspect the probe cable for cuts, kinks, or burn marks and check the connector for bent or corroded pins.

  2. 02

    Moisture or contamination in the probe connector

    Wiring / connection

    Liquid or food residue inside the probe socket can create a conductive short circuit path across the sensor terminals. Clean and dry the connector socket thoroughly and re-test before replacing parts.

  3. 03

    Short circuit in the probe cable wiring

    Part replacement

    The cable connecting the NT 50 probe to the control board may have internal wire damage, particularly near stress points where the cable bends. Flex the cable while monitoring resistance to identify intermittent shorts.

  4. 04

    Failed parallel resistance component on the control board

    Part replacement

    The electronic control board contains resistor components in the sensor monitoring circuit that can fail and create a false short circuit reading even when the probe is functioning normally. If the short is detected with the probe fully disconnected, the board is the likely source.

  5. 05

    Faulty probe socket on the oven cavity

    Part replacement

    The socket mounted in the oven cavity wall where the probe is inserted can accumulate grease or suffer contact damage over time, causing a persistent short circuit condition at the connection point.

See the test procedure for each cause

Frequently asked questions about F13

What does F13 mean on a Gaggenau oven?
F13 indicates a short circuit detected in the NT 50 food temperature sensor circuit. The oven's electronics are reading an abnormally low resistance value from the food probe sensor, which signals a short circuit either in the probe itself or in the parallel resistance components of the control board. The oven will typically halt normal cooking operations when this fault is active.
Can I fix the F13 error myself?
Some steps are within reach for a careful DIYer, such as inspecting the probe cable for visible damage, cleaning the probe connector and socket, and testing the probe with a multimeter. If the probe tests as shorted, replacing the NT 50 probe is a straightforward part swap. However, if the fault points to the electronic control board, board repair or replacement is generally a job for a qualified technician.
Is it safe to use my Gaggenau oven while the F13 error is showing?
It is best to avoid using the food probe feature while this fault is active, as the sensor readings will be unreliable. The oven may restrict certain cooking modes when F13 is present. Standard baking without the food probe may still be possible, but continued use without addressing the fault is not recommended, as it does not resolve the underlying electrical issue.
Will resetting the oven clear the F13 error?
A power reset by turning off the circuit breaker for 30 to 60 seconds may temporarily clear the F13 code, but the error will return if the underlying short circuit condition in the NT 50 probe or control board is still present. A reset alone does not repair the fault. The code will reappear as soon as the oven detects the same abnormal resistance reading again.
How much does it cost to repair a Gaggenau oven showing F13?
If the NT 50 food probe itself is the problem, replacement probe costs typically range from around $50 to $150 or more depending on the specific model, plus labor if a technician performs the work. If the electronic control board requires replacement, costs rise significantly, often falling in the range of $200 to $600 or more for parts alone. A diagnostic service call to isolate the fault location will add additional cost but helps avoid replacing the wrong component.

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