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How do I troubleshoot Thermador Masterpiece Wall Oven that is displaying E215 error code?

The electronic oven control board needs to be replaced if the oven overheated. Check the wire harness connections for the lower oven temperature sensor if the code appears when the oven is not overheating. If the wire harness is damaged, you should replace it. Check the lower oven temperature sensor resistance using a multimeter if the wire harness is ok. You should measure resistance at 70 degrees. If resistance is off, replace the oven temperature sensor. The electronic oven control board should be replaced if the sensor resistance and wire harness are ok.

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