Thermador Range Error Code Er:12

Er:12 on a Thermador range indicates that the flow rate sensor in the WFR 2460 washer system has detected a low water level. The sensor monitors water moving through the system and triggers this fault when flow drops below an acceptable level. The first steps are to inspect the water supply line for restrictions and, if the line is clear, to replace the flow rate sensor.

The Er:12 code relates to the water system of the range, not the cooking functions directly, but it is best to avoid using the appliance until the fault is diagnosed and corrected. Operating the water system in a low-flow condition could lead to further component damage. Address the issue before resuming normal use.

If the fix is simply clearing a blocked supply line or fully opening a shutoff valve, the cost is minimal. If the flow rate sensor needs replacement, parts and labor combined typically range from around $150 to $400 or more depending on your location and whether a technician is needed. Getting a diagnostic visit quote from a certified Thermador service provider will give you a more accurate estimate for your situation.

Some of the causes of Er:12 are DIY-friendly, such as checking for a kinked supply line, clearing a clogged inlet screen, or verifying that the water shutoff valve is fully open. If those checks do not resolve the fault, replacing the flow rate sensor is the next step, which requires comfort working with appliance components and water connections. If you are uncertain, a qualified technician should perform the repair.

A power reset may temporarily clear the Er:12 display, but the code will return if the underlying issue with the water supply line or flow rate sensor has not been corrected. A reset alone is not a repair. Diagnose and fix the root cause before relying on a reset to clear the fault.