Kenmore Dryer Error Code E74

E74 indicates a short circuit has been detected in the Inlet Control Thermistor circuit. The control board reads resistance from this sensor to monitor inlet air temperature, and it has detected a value far below the acceptable range of 47K to 66K ohms at room temperature. The fault points to either a defective thermistor or a problem in the associated wiring.

A power reset may temporarily clear the E74 code from the display, but it will return as soon as the control board detects the short circuit condition again during operation. The underlying fault in the thermistor or wiring must be repaired for the error to stay cleared.

If only the inlet control thermistor needs replacement, parts costs are typically modest, often in the range of $15 to $50 depending on the specific model. If a wiring harness section needs repair or replacement, costs may increase. Adding professional labor for diagnosis and repair generally brings the total into the $100 to $250 range, though this varies by region and service provider.

A knowledgeable DIYer can diagnose this fault by disconnecting power, then using a multimeter to measure resistance across the inlet control thermistor terminals. If the reading falls outside 47,000 to 66,000 ohms at room temperature (68 to 77 degrees Fahrenheit), the thermistor should be replaced. If resistance is in range, the wiring harness should be inspected carefully for pinched or shorted sections.

Running the dryer with a faulty inlet thermistor is not recommended. Without accurate inlet temperature data, the control board cannot properly regulate the heating cycle, which creates a risk of overheating the drum or its contents. It is best to stop using the dryer until the thermistor circuit is repaired.