Hisense Range Error Code Err 001

Err 001 indicates a failure condition in the oven's PT1000 temperature sensor circuit. The error can be triggered by a disconnected or shorted sensor, an over-temperature event during baking (above 590°F) or self-clean (above 840°F), or a failure of the oven to rise to temperature within the expected timeframe. The oven disables its heating elements when this error appears to prevent damage or unsafe operation.

No, you should not use the oven while Err 001 is active. The error indicates the temperature sensing circuit is not functioning reliably, meaning the oven cannot properly regulate heat. Continuing to operate it risks uncontrolled temperatures, which presents both a fire hazard and a risk of damage to the appliance.

If the repair only requires a new PT1000 temperature sensor, parts typically cost in the range of $20 to $60, with professional labor adding $80 to $150 depending on your area. If the fault traces back to the control board, board replacement can bring the total repair cost to $150 to $350 or more. Getting a diagnostic assessment from a technician first is the best way to avoid replacing parts that are not faulty.

Some causes of Err 001 are within reach of a DIYer. Start by checking that the PT1000 sensor connector at K21 is fully seated and that the sensor wiring has no visible damage. If the connection is secure and the wiring looks intact, the PT1000 probe itself may need to be replaced. Faults related to the control board, such as stuck relays causing over-temperature conditions, are more complex and generally require a technician.

A power reset by unplugging the range or turning off the circuit breaker for a few minutes may temporarily clear the display, but if the underlying fault in the PT1000 sensor or its wiring is still present, the error will return as soon as the oven attempts to operate. A permanent fix requires diagnosing and correcting the root cause before the error will stay cleared.