GE Refrigerator Error Code rD

The rD code indicates a problem with the RD-sensor, which is the refrigerator compartment defrost sensor located on the evaporator. The main PCB has detected that the sensor circuit is either open (disconnected) or shorted. This fault can disrupt the defrost cycle, potentially leading to frost buildup on the evaporator coils.

Continuing to run the refrigerator with an rD fault is not recommended for extended periods. Without a functioning defrost sensor, the defrost cycle cannot operate correctly, which can lead to heavy frost buildup on the evaporator and reduced cooling performance. Food safety could be affected if cooling is compromised.

If only the RD-sensor needs replacement, parts typically range from $15 to $50 depending on the specific model, with professional labor adding $100 to $200 in most markets. If the main PCB or a larger wiring harness is involved, total repair costs could rise to $200 to $400 or more. Getting a diagnostic visit from a qualified technician will give you a more accurate estimate for your specific unit.

Start by disconnecting connector CN15 from the main PCB and measuring resistance across the RD-sensor terminals. If the reading is infinite or near zero, the sensor circuit is faulty. Check the wiring harness for damage first, and if the wiring is intact, replace the RD-sensor on the evaporator.

A reset may temporarily clear the code from the display, but the error will return if the underlying sensor fault is not corrected. The main PCB continuously monitors the RD-sensor circuit, so a disconnected or shorted sensor will trigger the code again during normal operation. A proper repair requires inspecting and replacing the faulty component.