Electrolux Oven Error Code CntC

CntC indicates a failure in the cavity NTC3 temperature sensor circuit. The oven's control board monitors this sensor to track internal cavity temperature, and when the signal falls outside the expected range, the oven stops operation and displays this code. The fault can be caused by a wiring or connector issue at ACU connector X41, a failed NTC3 sensor, or a fault in the ACU itself.

No. The CntC fault stops the oven from operating, and this is intentional. Without a reliable cavity temperature reading, the oven cannot regulate heat safely, which creates a risk of overheating. Do not attempt to bypass or ignore this fault. The oven should remain off until the underlying cause is diagnosed and repaired.

Repair costs vary depending on which component has failed. An NTC3 cavity sensor replacement typically falls in the range of 30 to 80 dollars for parts, plus labor if a technician is involved. A wiring harness repair or replacement may cost somewhat more depending on the extent of the damage. ACU replacement is the most expensive scenario, with parts alone often ranging from 150 to 350 dollars or more. Having a technician perform a complete diagnosis first can help avoid unnecessary parts replacement.

A knowledgeable DIYer can perform basic diagnostics such as inspecting and reseating the connector at X41 on the ACU and checking the NTC3 sensor resistance, which should read approximately 10 kilohms at 25 degrees Celsius. If the connector is loose or corroded, cleaning and reseating it may resolve the fault at no parts cost. Replacing the NTC3 sensor is also a manageable repair for someone comfortable working with oven electronics, but ACU replacement is a more advanced job and may be better handled by a technician.

A power reset may temporarily clear the display, but the code will return if the underlying fault in the NTC3 circuit has not been corrected. If the connector at X41 was simply loose, reseating it and resetting power might resolve the issue permanently. However, a failed sensor or damaged wiring will continue triggering the fault until the defective component is repaired or replaced.