Whirlpool Microwave Error Code ERR C

ERR C on a Whirlpool microwave indicates a fuzzy temperature sensor error. The microwave's fuzzy logic temperature probe has reported a reading outside the valid range of 19°C to 41°C, and the control board has flagged this as a fault. The error typically means the probe has failed and needs to be replaced.

Basic microwave heating functions may still operate, but automatic cooking modes that rely on temperature sensing could produce inaccurate results since the probe data is invalid. It is best to avoid using sensor-based cooking programs until the probe has been replaced to prevent undercooked or overcooked food.

If only the fuzzy temperature probe needs replacement, repair costs are typically in the range of $30 to $100 for the part, plus labor if a technician performs the work. If the control board is also involved, total repair costs can rise to the $150 to $350 range depending on the model and service rates in your area. Getting a diagnostic estimate before committing to board replacement is advisable.

A power reset may temporarily clear the ERR C code, but if the fuzzy temperature probe is faulty, the error will return once the microwave attempts to use the sensor again. A reset does not address the underlying hardware fault. Replacing the probe is required for a lasting fix.

The recommended first step is to replace the fuzzy temperature probe. Before doing so, check the probe's wiring harness and connectors for any visible damage, corrosion, or loose connections, as these can also cause the error without requiring a new probe. If replacing the probe does not resolve the issue, the control board should be evaluated.