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

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.

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.

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.

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.

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.