Hotpoint Dishwasher Error Code AL12

AL12 indicates a complete loss of communication between the main PCB and the display card. The two control boards rely on a wired data link to coordinate all functions, and when that link is interrupted the dishwasher logs AL12 and stops operating. The fault can stem from a loose cable, a damaged wire, corroded terminals, or a failed board on either end of the connection.

A power reset by switching off the appliance at the mains for a few minutes may temporarily clear the AL12 code if the fault was caused by a transient electrical glitch. However, if there is an underlying physical problem such as a damaged cable, corroded connector, or failed board, the error will return as soon as the machine attempts to operate. A reset alone is not a fix for a genuine communication fault.

Repair costs vary depending on the root cause. If only the communication cable needs replacement, parts and labor costs are generally in the range of $50 to $150. Replacing a display card typically falls in the $80 to $200 range including parts and labor. Main PCB replacement is the most expensive scenario, often ranging from $150 to $350 or more depending on the specific model and technician rates in your area.

Some cases of AL12 can be resolved without professional help, particularly if the cause is a loose connector that simply needs to be reseated. Turn off power to the appliance, access the door panel, and check that the communication cable is firmly plugged into both the main PCB and the display card. If the cable is damaged or a board has failed, those repairs are more involved and may be better suited to a qualified technician.

The dishwasher will typically stop functioning normally when AL12 is active, so continued use during the fault is not possible in most cases. You should not attempt to bypass the error and force a cycle, as the control system cannot properly manage the wash program without the communication link intact. Leave the appliance switched off until the fault is diagnosed and repaired.