Bosch Washer Error Code F:37

F:37 means the washer has detected an open or broken circuit in the NTC temperature sensor system. The NTC thermistor is used to monitor water temperature throughout the wash cycle, and a complete loss of signal triggers this fault. The machine stops to prevent uncontrolled heating. The fault points to either a broken wire harness connection or a failed sensor.

It is not recommended to continue using the washer while F:37 is active. Without a functioning temperature sensor, the control board cannot regulate water heating accurately, which could lead to overheating or damage to fabrics and internal components. Most Bosch washers will also halt the cycle automatically when this fault is present.

Unplugging the washer and restoring power may temporarily clear the displayed code, but the fault will return immediately if the underlying open circuit condition is still present. A reset does not repair a broken wire or failed sensor. The error will only stay clear once the root cause, either the harness or the NTC sensor, has been properly repaired or replaced.

A knowledgeable DIYer can often resolve this by inspecting the wire harness and reseating or repairing connectors, which requires no special tools beyond basic hand tools. If the NTC sensor itself has failed, replacing it is a straightforward repair involving disconnecting the old sensor and plugging in a new one. Always unplug the washer from power before accessing internal components.

If only a wire harness repair or connector reseating is needed, costs can be minimal, covering just your time. If the NTC temperature sensor requires replacement, parts typically range from $15 to $50 depending on the specific model. Professional labor to diagnose and replace the sensor generally adds $80 to $200 on top of parts costs.