Problem summary
Your CAPLE DI63 dishwasher is leaking water and displaying error code E4. This combination suggests a fault in one of the sealed or electrical systems that control water flow and drainage. Error E4 typically indicates a problem with the motor, pump, or water-management circuit—all of which require professional diagnosis and repair.
Likely causes
Based on patterns we've seen across the DI63 range, leaks paired with E4 are most often caused by:
- Motor failure (about 12.5% of similar reports): The wash motor may have failed electrically or mechanically, preventing proper circulation and drainage.
- Pump malfunction (about 10% of reports): The drain pump or circulation pump may be blocked, worn, or have failed, causing water to back up and escape.
- Door seal degradation (about 5% of reports): A worn or misaligned door seal allows water to escape during the wash cycle, and the machine may shut down to prevent further loss.
Other possibilities include a blocked drain hose, a faulty inlet valve, or a control board fault—but these are less common with the E4 code alongside active leaking.
Why this needs an engineer
All three top causes involve:
- Electrical components (motor, pump, control circuits)
- Sealed or pressurised parts (pump assemblies, inlet valves)
- Mechanical assemblies that require testing equipment to diagnose safely
Attempting to disassemble the machine or replace these parts yourself risks electric shock, water damage to your kitchen, and voiding any manufacturer cover you may have. The E4 code also needs to be read properly by diagnostic tools to rule out circuit faults.
When to call SMC Services
Call us if: - The leak is active and you're seeing water pooling beneath or around the dishwasher - The E4 error returns after a power reset - Water is leaking from the door seal during a cycle - The machine won't drain at all
Bring a note of when the leak started and what you were running (a full wash, rinse cycle, etc.) when it first appeared. This helps our engineer narrow down the fault faster.
If you're in Northern Ireland, SMC Services can usually book a repair within 2–3 working days.