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Error code reference

GE Refrigerator Error Code R2 R3 R4 R5 (all OFF except R2 ON)

Refrigerator sensor open or short circuit detected.

GE codesGE refrigerator codes

Refrigerator sensor open or short circuit detected.

First step from the service manual

Check each sensor.

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

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  • 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
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What R2 R3 R4 R5 (all OFF except R2 ON) means on a GE refrigerator

The R2 R3 R4 R5 (all OFF except R2 ON) error code on a GE refrigerator signals that the control board has detected an open or short circuit condition in the refrigerator compartment temperature sensor. The relay status pattern, with R2 active and R3, R4, and R5 inactive, is the board's way of flagging a sensor fault rather than a compressor or sealed system issue. Temperature sensors in GE refrigerators are typically negative temperature coefficient (NTC) thermistors that change resistance predictably with temperature. When the board reads a resistance value outside the expected range, either too high (open circuit) or too low (short circuit), it logs this fault condition and adjusts relay output accordingly.

The refrigerator compartment sensor is responsible for feeding real-time temperature data to the main control board, which uses that data to cycle the compressor and manage airflow. A failed sensor means the board cannot accurately regulate compartment temperature, which can cause the refrigerator to run continuously, short-cycle, or fail to cool altogether. Common causes include a broken sensor wire harness, a failed thermistor, corrosion at the connector, or physical damage to the sensor from ice buildup. The first diagnostic step is to check each sensor individually, measuring resistance with a multimeter and comparing readings to the expected values for a given temperature to determine whether the fault is in the sensor itself or the wiring leading to it.

Source: manufacturer service documentation.

Common causes of R2 R3 R4 R5 (all OFF except R2 ON)

  1. 01

    Failed refrigerator compartment thermistor

    Part replacement

    The NTC thermistor itself may have failed internally, producing an out-of-range resistance reading that the board interprets as an open or short. Testing with a multimeter will show resistance values that do not correspond to the ambient temperature.

  2. 02

    Damaged or broken sensor wiring harness

    Part replacement

    Wires running from the sensor to the control board can become pinched, frayed, or broken, causing an open circuit. Inspect the harness along its entire length for visible damage or breaks.

  3. 03

    Corroded or loose sensor connector

    Wiring / connection

    The connector between the sensor wiring harness and the control board can develop corrosion or work loose over time, interrupting the circuit. Disconnecting and reseating the connector while inspecting the pins for oxidation is an important early diagnostic step.

  4. 04

    Ice or moisture intrusion at the sensor

    Wiring / connection

    Ice buildup around the sensor or water infiltration into the sensor body or connector can cause erratic or shorted readings. This is more common in units that have experienced a defrost system problem.

  5. 05

    Faulty main control board

    Part replacement

    If the sensor and all wiring test within acceptable resistance ranges, the control board itself may be misreading the sensor input due to a failed input circuit. This is the least common cause and should be confirmed only after ruling out sensor and wiring issues.

See the test procedure for each cause

Frequently asked questions about R2 R3 R4 R5 (all OFF except R2 ON)

What does R2 R3 R4 R5 (all OFF except R2 ON) mean on a GE refrigerator?
This relay status pattern indicates the control board has detected an open or short circuit in the refrigerator compartment temperature sensor. The board monitors sensor resistance continuously, and when the reading falls outside the valid range, it flags this fault. It does not indicate a sealed system or compressor failure. The sensor and its associated wiring need to be inspected and tested to resolve the code.
How do I fix the R2 sensor fault on my GE refrigerator?
Start by locating the refrigerator compartment temperature sensor and disconnecting it from the wiring harness. Use a multimeter to measure the sensor's resistance and compare it to the expected value for the current temperature. Also inspect the harness and connector for damage, corrosion, or loose pins. If the sensor reads open or shorted, replacing the thermistor is typically the fix, though wiring repairs may also be needed.
Is it safe to keep using my GE refrigerator while this error is active?
It depends on how the refrigerator is behaving. If the compartment is still maintaining safe food temperatures (below 40 degrees Fahrenheit), short-term use may be acceptable while awaiting repair. However, because the control board cannot reliably regulate temperature without a valid sensor reading, food safety can be compromised quickly. Check compartment temperature with a standalone thermometer and address the fault promptly.
How much does it cost to repair a GE refrigerator sensor fault?
If only the thermistor needs replacement, parts typically cost in the range of $15 to $50 depending on the specific sensor. If professional labor is involved, total repair costs generally range from $100 to $250. Wiring harness repairs or control board replacement would push costs higher, potentially into the $200 to $400 range for parts and labor combined.
Will resetting the GE refrigerator clear this error code?
A power reset, such as unplugging the unit for a few minutes and restoring power, may temporarily clear the displayed fault. However, if the underlying sensor or wiring problem still exists, the code will return once the board runs its diagnostic checks again. A reset alone is not a repair. The sensor and harness must be tested and any faulty components replaced to permanently resolve the fault.

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