Bosch Range Error Code F122

F122 indicates a fault in the touch key selection mechanism caused by contamination on the back side of the glass between the display control and the glass panel. Grease, moisture, or cooking residue interferes with the signals the touch keys rely on to function. The error is commonly triggered by oven vent exhaust discharging behind the front manifold and depositing contaminants on the interior glass surface. Cleaning the back of the glass with isopropyl alcohol is the recommended first step.

The F122 code itself is not a direct safety hazard, as it relates to contamination affecting the touch key interface rather than a gas leak or heating element failure. However, if the error prevents the controls from responding correctly, it could limit your ability to operate the range safely. It is best to address the code promptly rather than continuing to use the appliance with a malfunctioning control panel.

If the issue is only contamination on the glass surface, the repair may cost nothing beyond isopropyl alcohol and your time. If the oven vent seal is damaged and needs replacement, parts and labor costs typically range from around $75 to $200 depending on the specific component and your location. In cases where the display control board has been damaged by prolonged exposure to grease or moisture, repair costs can range from $200 to $500 or more including parts and professional labor.

Start by cleaning the back surface of the control panel glass thoroughly with isopropyl alcohol to remove any grease or moisture residue. After cleaning, check that the oven vent is not routing exhaust behind the front manifold, as this will cause the contamination to return. If the code persists after cleaning and the vent is confirmed to be properly routed, the display control board may need to be inspected or replaced by a qualified technician.

A power reset may temporarily clear the F122 display, but the error will return if the underlying contamination on the back of the control panel glass is not removed. The code is triggered by a physical condition at the glass interface, so a reset alone does not resolve the root cause. Cleaning the glass and inspecting the vent routing are necessary steps to prevent the code from reappearing.