Bosch Refrigerator u1 Points to the V-Sensor

What u1 means

The V-sensor is a further compartment probe on Bosch French door refrigerators, working next to the main fresh food and freezer sensors, and u1 is its error. The repair manual records two states, a break or a short, and prescribes one routine: disconnect CN14 where it meets the main board, measure resistance across the terminals, and install a new sensor whenever the reading is open or shorted.

Common causes of u1

V-sensor that has gone open-circuit or shorted
Plug CN14 sitting loose on the main board
Wire damage somewhere between the sensor and the board

✓ One safe check you can try

1. Take a thermometer to each compartment and record which ones are running off-target. 2. Note how long this has gone on. 3. Pass it along when you call. A code with perfectly normal temperatures is a different conversation from one with a section that has drifted, and it helps us bring the right part.

! Why to stop there

Unplugging CN14 yourself risks a bent pin or a connector that goes back wrong, creating a second problem.
Confusing the V-sensor with the main probes would send the whole repair the wrong way.
A damaged wire between sensor and board can pass for a bad sensor, so the sensor alone may not solve it.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Refrigerator codes

C1Bosch Refrigerator C1 Means the Compressor Runs but the Cabinet Will Not Cool F3Bosch Refrigerator F3 Shows a Freezer Defrost That Timed Out r3Bosch Refrigerator r3 Shows a Fresh Food Defrost That Timed Out ESBosch Refrigerator ES Means a Dispenser Button Reads as Pressed r1Bosch Refrigerator r1 Marks a Fresh Food Probe With No Usable Signal FDBosch Refrigerator FD Warns About the Freezer Defrost Sensor rDBosch Refrigerator rD Marks the Fresh Food Defrost Sensor iDBosch Refrigerator iD Concerns the Ice Duct Sensor

u1u1 questions

Is the V-sensor one of the main temperature probes?

No. It is an additional probe the control reads next to the main ones. It reports in the same two ways, as a break or as a short.

Can I ignore u1 if everything feels cold?

For a short while. A sensor that reads wrong can change how the refrigerator behaves later on, so we would book a check rather than wait for a problem.

What happens during the visit?

We test the sensor and its connection, tell you the cause, and give you a written price. If you approve, we fix it, with a 30-day workmanship warranty.