GE Refrigerator Error Code R-1-ⓐ

R-1-ⓐ is an ice maker sensor error code indicating a problem with the temperature sensor in the ice maker assembly. The fault can be caused by sensor housing separation, a wiring disconnection, a contact error at the connector, or a short circuit. The error also activates if the sensor reports a temperature above 149°F (65°C) or below -58°F (-50°C), which are outside valid operating limits. The first diagnostic step is measuring voltage at main PCB connector CN90 pins 3 and 4, which should read between 1.0V and 4.5V.

This error code relates specifically to the ice maker sensor circuit and does not directly affect food safety in the main refrigerator or freezer compartments. However, a malfunctioning ice maker sensor can cause the ice maker to behave unpredictably or stop producing ice. You should address the fault promptly to restore normal ice maker operation, but perishable food in other compartments is generally not at immediate risk.

Repair costs vary depending on the specific cause. If the fix involves only reseating a loose connector or repositioning the sensor in its housing, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the ice maker temperature sensor needs replacement, parts and labor combined generally fall between $100 and $250. Harness repairs or main PCB replacement would increase costs further.

Start by checking the wiring and connectors running from the ice maker sensor to the main PCB, particularly at CN90 pins 3 and 4. Reseat any loose connectors and inspect the harness for visible damage. If the voltage at CN90 is outside the 1.0V to 4.5V range with all connections secure, the sensor itself likely needs to be replaced. If wiring damage is found, that section of the harness will need repair or replacement as well.

A power reset may temporarily clear the error code from the display, but if the underlying fault in the sensor circuit has not been corrected, the code will return. The control board will re-detect the condition during its next diagnostic cycle. A proper repair, including fixing the wiring, connector, or replacing the sensor, is required to permanently resolve the error.