Bosch Refrigerator Error Code r1

The r1 code indicates a problem with the R-sensor, the temperature sensor located inside the refrigerator compartment. The Main PCB has detected either an open circuit, meaning the sensor is disconnected, or a short circuit in the sensor circuit. This fault prevents the control board from accurately reading the compartment temperature, which can affect cooling performance.

Continued use is not recommended. The r1 fault means the control board cannot reliably monitor the refrigerator compartment temperature, which may cause inconsistent cooling or a complete loss of cooling. Food safety can be compromised if the compartment temperature rises above safe levels without the board detecting it.

A power reset may temporarily clear the r1 code from the display, but the code will return if the underlying sensor fault is still present. The Main PCB will re-detect the open circuit or short circuit condition during normal operation and log the fault again. A permanent fix requires diagnosing and resolving the sensor or wiring issue at CN7 or CN14.

A knowledgeable DIYer can perform the basic diagnostic step of checking the connector at CN7 or CN14 for a loose or corroded connection and reseating it. However, accurately diagnosing the fault requires a multimeter to measure sensor resistance, and replacing the R-sensor involves accessing internal compartment components. If you are not comfortable with electrical testing or disassembly, a qualified technician is recommended.

If only the R-sensor needs replacement, parts typically range from around $20 to $60 depending on the model, with labor costs adding $80 to $150 or more if a technician performs the repair. If the Main PCB is involved, repair costs can be significantly higher, ranging from $200 to $400 or more for parts and labor combined.