GE Refrigerator Error Code 4

Error code 4 means the resistance of all temperature sensors in the refrigerator has dropped below 660 ohms, which is outside the normal operating range. Because all sensors are affected at once, this typically points to a shared wiring or connector problem rather than multiple individual sensor failures. The first place to check is the 6-way RAST connector at the power/control module.

A reset may temporarily clear the error code from the display, but if the underlying cause is still present, the code will return once the control module re-evaluates the sensor readings. Resetting is useful for confirming whether the fault is intermittent, but it should not be relied on as a fix. The root cause in the sensor circuit or wiring must be corrected to permanently resolve the error.

Repair costs depend on the root cause. Reseating or cleaning a connector is typically a low-cost service call, ranging from roughly $75 to $150 for labor alone. Replacing a wiring harness or individual thermistors can add $50 to $200 or more in parts. If the power/control module needs replacement, total costs including parts and labor can range from $200 to $500 or higher depending on the model.

A knowledgeable DIYer can start by inspecting and reseating the 6-way RAST connector at the power/control module, which requires basic mechanical skills and no special tools. If the connector looks corroded or damaged, cleaning the terminals or replacing the connector may resolve the fault. However, if the issue lies in the wiring harness or the control module itself, professional diagnosis and repair are recommended.

Error code 4 means the control board cannot reliably read any of the internal temperatures, so it cannot properly regulate cooling. Food safety may be at risk if the refrigerator is not maintaining correct temperatures without the technician being aware. It is best to check the actual temperature inside the unit with a standalone thermometer and avoid storing perishables until the fault is resolved.