Dishwasher stops mid-cycle and displays i50. You may hear a click but no pump or motor operation.

Safety first: Disconnect the appliance from mains power before removing any panels. This fault involves high-voltage components.

• Reset the appliance: Leave the dishwasher unplugged for at least 10 minutes, then reconnect and try a short cycle. If i50 reappears immediately, proceed with further checks.
• Listen for pumps: At the start of a cycle, the drain pump should run briefly. If there is no sound at all, the control board may not be driving the pump or the pump is shorted.
• Inspect wiring: Remove the kick plate and check the wiring harness to the drain pump and circulation pump for visible damage, burning, or loose connectors.
• Measure pump resistance (for skilled users): With the machine unplugged, disconnect the pump connectors and measure coil resistance with a multimeter. A dead short (near 0 Ω) or open circuit indicates a faulty pump.
• Control board diagnosis: If pumps test OK but i50 persists, the main PCB triac is likely damaged and the board must be repaired or replaced. This is not recommended as a DIY repair unless you are experienced with electronics; contact an AEG technician.