Bosch Washer Error Code R00

R00 indicates an interruption in the cable harness that supplies power and signal to the water level sensor or flow sensor. The control board cannot detect a valid reading from those sensors because the wiring circuit is open or broken. This causes the washer to stop operation as a safety precaution. The fix typically involves inspecting and replacing the affected wiring harness.

It is not recommended to continue running the washer while R00 is active. The water level sensor is what prevents the machine from overfilling, and without reliable sensor communication the washer cannot control water intake safely. Continued use risks water overflow or flooding inside the cabinet.

A reset may temporarily clear the error display, but the code will return as soon as the control board attempts to communicate with the sensor and finds the circuit still open. Because R00 is caused by a physical wiring fault rather than a software glitch, the underlying harness issue must be corrected before the error will stay cleared.

A knowledgeable DIYer can attempt this repair by first unplugging the machine, then tracing and inspecting the wiring harness from the control board to the water level and flow sensors. Reconnecting a loose connector or cleaning corroded pins may resolve the issue without parts. If a wire is broken or the harness is physically damaged, replacing the harness requires basic electrical skills and sourcing the correct replacement part for your model.

If only a connector needs reseating or cleaning, there may be little to no parts cost, though a service call fee typically runs in the range of $75 to $150. If the cable harness requires replacement, parts and labor combined generally fall in the range of $100 to $300 depending on the specific model and local labor rates. Sensor replacement, if required, adds to that estimate.