What r1 Means
r1 on a Bosch French door refrigerator is the fresh food compartment sensor reading as disconnected or shorted. The repair manual's check is a resistance measurement taken after separating connector CN15 on the main board, with Lo indicating a disconnection and Hi a short. The remedy is to replace the sensor in the refrigerator compartment.
Common Causes of r1
- Fresh food compartment sensor failed open or shorted
- Sensor connector loose at the main board
- Wiring damage where the harness passes through the cabinet
🔧 One Safe Check You Can Try
Make sure nothing inside is pressing against the rear wall of the fresh food section and that the air vents are clear, then give the appliance a day to settle. Blocked airflow produces symptoms that look like a sensor fault without being one.
⚠ Why You Shouldn't Go Further Than That
- The fresh food sensor shares a board connector with several other circuits, so disturbing it to test one of them risks the rest.
- Reaching the main board means moving a heavy French door appliance and removing a rear cover next to the compressor circuit.
- A sensor refitted in a slightly different position reads a different air temperature even when the part is new.
- The freezer and fresh food sensors are separate parts with separate codes, and swapping the wrong one leaves the fault untouched.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.