mypros+
Error code reference

Hisense Range Error Code Err 001

Oven temperature sensor failure due to disconnected PT1000 sensor, short circuit PT1000 sensor…

Hisense codesHisense range codes

Oven temperature sensor failure due to disconnected PT1000 sensor, short circuit PT1000 sensor, over-temperature during baking (>590°F/310°C), over-temperature during Self Clean (>840°F/450°C), or insufficient temperature rise during baking or Self Clean.

First step from the service manual

Disconnect PT1000 probe to verify error is triggered; for over-temperature test, heat PT1000 probe with heating gun or disconnect PT1000 probe and insert 3kΩ resistor on K21 connector.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for Err 001.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What Err 001 means on a Hisense range

Err 001 on a Hisense range indicates a fault in the oven temperature sensing circuit, specifically involving the PT1000 sensor. The PT1000 is a platinum resistance temperature detector (RTD) that changes its resistance in a predictable way as temperature rises, starting at 1000 ohms at 0°C and increasing with heat. The oven control board monitors this resistance continuously to regulate baking and self-clean cycles. When the board detects a reading outside acceptable parameters, it throws Err 001 and disables the heating elements as a safety measure.

This error covers several distinct fault conditions: a fully disconnected PT1000 sensor (open circuit), a short circuit in the sensor or its wiring, an over-temperature event during baking exceeding 590°F (310°C), or an over-temperature event during self-clean exceeding 840°F (450°C). It can also trigger if the oven fails to reach an adequate temperature within a set timeframe during baking or self-clean, which can point to a weak heating element or a sensor reading that is drifting low.

Diagnosis begins by disconnecting the PT1000 probe from the K21 connector to confirm the control board responds with the error, verifying the board's sensing circuit is functional. For suspected over-temperature faults, applying targeted heat to the PT1000 probe with a heat gun, or substituting a 3kΩ resistor at the K21 connector, simulates a high-temperature reading and confirms whether the over-temperature detection logic is working correctly. These steps help isolate whether the fault is in the sensor itself, the wiring harness, or the control board.

Source: manufacturer service documentation.

Common causes of Err 001

  1. 01

    Disconnected or open-circuit PT1000 sensor

    Wiring / connection

    A loose connector at the K21 port or a break in the sensor wiring creates an open circuit, which the control board reads as a sensor failure. Disconnecting the PT1000 probe during diagnosis should immediately reproduce this error, confirming the board is reading the circuit correctly.

  2. 02

    Failed or shorted PT1000 sensor

    Part replacement

    Internal failure of the PT1000 element can cause a short circuit, producing a resistance reading far outside the expected range. This typically requires replacing the sensor probe itself.

  3. 03

    Over-temperature during baking (above 590°F / 310°C)

    Part replacement

    A runaway heating element or a stuck relay on the control board can drive oven temperatures above the 590°F threshold, triggering a protective shutdown. This condition can be simulated by inserting a 3kΩ resistor at the K21 connector to confirm the over-temperature detection circuit is active.

  4. 04

    Over-temperature during self-clean (above 840°F / 450°C)

    Part replacement

    If the oven exceeds 840°F during the self-clean cycle, Err 001 triggers as a safety shutoff. This can indicate a faulty relay on the control board that is not cutting power to the element at the correct point.

  5. 05

    Insufficient temperature rise during baking or self-clean

    Part replacement

    If the oven fails to reach an expected temperature within the required time, the board logs this as a sensor or heating fault. A weak or partially failed baking element, or a sensor that reads artificially low, can both produce this condition.

See the test procedure for each cause

Frequently asked questions about Err 001

What does Err 001 mean on a Hisense range?
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.
Can I fix Err 001 myself on a Hisense range?
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.
Is it safe to use my Hisense range when Err 001 is showing?
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.
Will resetting my Hisense range clear the Err 001 code?
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.
How much does it cost to repair Err 001 on a Hisense range?
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.

Related Hisense range codes

All Hisense range codes
View all 10 Hisense range codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass