Error Code E122

Oven Error Code E122: Troubleshooting and Solutions

Experiencing error code E122 on your Bosch, Siemens, Neff, Constructa, or Gaggenau oven or steam oven can be concerning. This error code indicates a critical issue with the appliance’s temperature regulation system. Specifically, E122 points to one of two primary causes: either the temperature detected in the vicinity of the rotisserie (spit) accessory is excessively high, triggering a safety shutdown, or the upper temperature sensor (also known as an NTC sensor) that monitors the cooking cavity’s temperature has malfunctioned or is providing inaccurate readings.

What you can do:

• Check the temperature settings and usage of the spit accessory:

  • If you are currently utilizing the rotisserie spit accessory, it is imperative to immediately review the temperature you have set for the cooking cycle. Verify that the temperature selected on the oven’s control panel is consistent with the recommended operating temperatures for the spit function as outlined in your appliance’s user manual. Setting an unusually high temperature when using the spit can lead to an uncontrolled rise in temperature in that specific area, prompting the oven’s safety mechanism to display the E122 error.
  • Refer to your user manual to ascertain the maximum safe operating temperature when using the spit function. In some instances, simply reducing the set temperature or ensuring the food item is properly positioned and loaded on the spit can resolve the issue of overheating.

• Perform a complete power cycle (Turn the oven off and on again):

  • Occasionally, transient electronic glitches or temporary communication errors between the temperature sensor and the main control board can trigger a false error code like E122. A comprehensive reset of the appliance’s power supply can often clear these temporary faults.
  • To ensure a true hard reset, it is essential to bypass the standard control panel on/off switch. The appliance must be completely disconnected from its electrical source. This can be achieved by unplugging the oven directly from the wall socket or, alternatively, by turning off the specific circuit breaker or removing the fuse that supplies power to the oven in your home’s electrical panel.
  • After disconnecting the power, wait for a minimum duration of 5 to 10 minutes. This waiting period allows all internal electronic components and control boards to fully discharge any residual electrical charge and reset their operational parameters before you attempt to restore power and restart the oven.

• Contact an authorized service technician:

  • If the E122 error code reappears immediately after you have verified the temperature settings (and especially if you were not using the spit accessory at all) and have performed the complete power cycle reset, it is highly probable that the internal upper temperature sensor is faulty or has ceased to function.
  • The temperature sensor is a vital component within the oven, responsible for accurately measuring and relaying the internal temperature to the control system, which then regulates the heating elements. A malfunctioning sensor prevents the appliance from safely and reliably controlling its cooking temperature.
  • Replacing a temperature sensor is a task that requires specialized tools, technical knowledge, and involves working with the oven’s internal electrical system. For your safety and to maintain any applicable warranty, it is strongly recommended to contact an authorized service technician. They are equipped to provide a professional diagnosis and carry out the necessary repairs.
  • Important Safety Warning: It is crucial to refrain from using the oven until the E122 error condition has been professionally diagnosed and rectified. Continuing to operate the oven with a known sensor failure compromises its ability to manage temperature accurately, which could potentially lead to damage to the appliance itself or present a safety hazard.