LG Dishwasher Error Code bC

The bC code on an LG dishwasher indicates a button or key input error, specific to software version 7134 and later. It means the control board has detected that a button was held or registered as continuously pressed for 30 seconds or longer. The dishwasher treats this sustained signal as a fault but will continue running through the rest of the current cycle rather than stopping immediately.

The bC error does not indicate a water leak, electrical hazard, or mechanical failure that would make continued use immediately dangerous. The dishwasher is designed to complete the current cycle even with the code active. However, you should address the underlying cause promptly, as a faulty control input can affect how the machine responds to commands over time.

Repair costs depend heavily on the root cause. If the fix is simply drying out condensation on the PBA connectors, there may be no parts cost at all, only a service call fee if a technician is involved. Touchpad or membrane switch replacement typically ranges from around 50 to 150 dollars in parts, while a full PBA control board replacement can range from 100 to 300 dollars or more in parts, plus any applicable labor costs.

Start by checking the PBA connectors for condensation or moisture, as this is the primary diagnostic step. If moisture is present, disconnect power, allow the connectors to dry thoroughly, and reconnect them. If the error persists, inspect the control panel buttons for any that feel stuck, and check the wiring harness between the panel and the control board. If none of those resolve the issue, the touchpad or control board may need replacement.

A power reset by unplugging the dishwasher or turning off the circuit breaker for a few minutes may temporarily clear the bC code. However, if the underlying cause, such as a stuck button, moisture on the PBA connectors, or a faulty touchpad, is not corrected, the code will return. A reset alone is not a fix, just a way to confirm whether the fault is intermittent or persistent.