Bosch Dishwasher Error Code F47

F47 indicates a communication fault between the selection-display module (BAE) and the control-power module (SLT). These two boards must exchange data continuously for the dishwasher to operate, and F47 appears when that link fails. The fault can stem from a damaged harness, corroded connectors, or a failed module. The dishwasher will not run normally until the issue is resolved.

When F47 is active, the dishwasher's two main control modules are not communicating properly, and the appliance will typically refuse to start a cycle as a safety precaution. You should not attempt to force the machine to run while this fault is present. Leave the dishwasher powered off until the fault is diagnosed and repaired.

A power reset, such as unplugging the dishwasher or cycling the circuit breaker, may temporarily clear the F47 code, but it will almost certainly return if the underlying hardware fault is not addressed. F47 is caused by a genuine communication failure between two control modules, not a software glitch. Resetting should only be used to confirm whether the fault is persistent, not as a long-term fix.

A knowledgeable DIYer can start by checking the wiring harness and connectors between the two control modules for loose connections, corrosion, or visible damage. If the connectors look clean and secure, resolving the fault typically requires replacing one or both electronic modules, which is a more involved repair. Working with dishwasher electronics requires care around water exposure risks, and many homeowners prefer to have a technician handle module replacement.

Repair costs depend on whether the issue is a loose connector or a failed module. If a connector re-seat or harness repair resolves the fault, costs may only cover a service call, typically in the range of $75 to $150. If one or both electronic modules need replacement, parts and labor combined can range from $200 to $500 or more depending on the specific model and local labor rates.