mypros+
Error code reference

Haier Dishwasher Error Code LED1:1 LED2:1 LED3:0 LED4:1 LED5:0

Sensor open circuit

Haier codesHaier dishwasher codes

Sensor open circuit - the temperature sensor circuit is open.

First step from the service manual

Check whether socket connector is connected well; check the resistance between the heater resistor terminals; check whether the circuit between the two terminals is open.

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 LED1:1 LED2:1 LED3:0 LED4:1 LED5:0.

  • 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 LED1:1 LED2:1 LED3:0 LED4:1 LED5:0 means on a Haier dishwasher

The LED1:1 LED2:1 LED3:0 LED4:1 LED5:0 error code on a Haier dishwasher indicates an open circuit condition in the temperature sensor system. This means the control board is receiving no signal from the temperature sensor, typically a thermistor, because the electrical circuit between the sensor and the control board has been broken. An open circuit differs from a short circuit in that instead of an unintended connection, the circuit path is completely interrupted, preventing any current or signal from flowing. The control board interprets this absence of signal as a fault condition and halts normal operation to prevent damage from uncontrolled heating.

The temperature sensor in a Haier dishwasher monitors water temperature throughout the wash and heat cycles, feeding data back to the control board to regulate the heating element. When this sensor circuit opens, the board loses visibility into actual water temperature, creating both a performance and safety concern. The fault can originate at several points along the circuit path, including the sensor itself, the wiring harness, the socket connector between the harness and the sensor or board, or the heating element circuit. Diagnosing this code requires checking the physical connector seating first, then measuring resistance across the sensor terminals and verifying continuity through the full circuit path between the two heater resistor terminals.

Source: manufacturer service documentation.

Common causes of LED1:1 LED2:1 LED3:0 LED4:1 LED5:0

  1. 01

    Loose or disconnected socket connector

    Wiring / connection

    The connector joining the temperature sensor wiring harness to the control board or sensor body may have worked loose due to vibration. Visually inspecting and firmly reseating all connectors in the sensor circuit is the first diagnostic step.

  2. 02

    Failed temperature sensor (thermistor)

    Part replacement

    The thermistor itself can fail in an open state, producing infinite resistance instead of the expected value. Resistance measurement across the sensor terminals will reveal an open reading if the sensor has failed internally.

  3. 03

    Broken or damaged wiring harness

    Part replacement

    The wiring between the temperature sensor and the control board can develop breaks due to repeated door movement, heat exposure, or pinching during installation. Inspecting the full harness run for cuts, corrosion, or broken wires is necessary to rule this out.

  4. 04

    Open circuit in the heater resistor circuit

    Part replacement

    An interruption in the circuit between the heater resistor terminals can produce this fault code. Checking continuity directly between those two terminals will confirm whether this portion of the circuit is intact.

  5. 05

    Corrosion at connector terminals

    Wiring / connection

    Moisture inside the dishwasher cavity can cause oxidation or corrosion at the sensor connector pins, increasing resistance to the point of an effective open circuit. Corroded terminals will show discoloration and may require cleaning or connector replacement.

See the test procedure for each cause

Frequently asked questions about LED1:1 LED2:1 LED3:0 LED4:1 LED5:0

What does LED1:1 LED2:1 LED3:0 LED4:1 LED5:0 mean on a Haier dishwasher?
This LED pattern indicates an open circuit fault in the temperature sensor system. The dishwasher's control board is unable to receive a signal from the temperature sensor because the circuit path is broken somewhere between the sensor and the board. The appliance will not operate normally until the fault is diagnosed and the open circuit is repaired.
How do I fix the temperature sensor open circuit error on my Haier dishwasher?
Start by checking that all connector plugs in the sensor circuit are firmly seated and free of corrosion. Next, use a multimeter to measure resistance across the temperature sensor terminals and check for continuity between the heater resistor terminals. If the sensor shows infinite resistance or any wiring segment shows no continuity, the faulty component will need to be replaced. If you are not comfortable using a multimeter or accessing internal components, a qualified technician should perform the repair.
Is it safe to run my Haier dishwasher when this error code is showing?
No, you should not run the dishwasher while this error is active. The temperature sensor open circuit means the control board cannot monitor water temperature, removing a key safety control over the heating element. Operating the appliance in this state could result in overheating or ineffective wash cycles, and may cause further damage to other components.
Will resetting my Haier dishwasher clear this error code?
A simple power reset will not permanently clear this code because the fault condition, the open circuit, is still physically present in the wiring or sensor. The error will return as soon as the control board runs its diagnostic check after restart. The underlying open circuit must be located and repaired before the error code will clear and stay clear.
How much does it cost to repair a temperature sensor open circuit on a Haier dishwasher?
Repair costs vary depending on what is causing the open circuit. If the fix is a reseated connector or cleaned terminal, there may be no parts cost, though a service call from a technician typically runs between $75 and $150. If the temperature sensor itself needs replacement, parts generally range from $15 to $60 depending on the specific model, plus labor. Wiring harness replacement tends to be more labor intensive and can push total repair costs into the $150 to $300 range.

Related Haier dishwasher codes

All Haier dishwasher codes

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

Get Started

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