What Does Monogram Dishwasher Error Code C4 Mean?

Error code C4 on a Monogram dishwasher indicates a drain pump fault — the dishwasher was unable to drain water within the expected time window. Standing water remains in the tub after the drain cycle.

Common Causes

  • Clogged drain filter – The most common cause. Food particles and debris accumulate in the filter assembly, blocking flow to the drain pump.
  • Blocked drain hose – A kinked or clogged drain hose prevents water from exiting the dishwasher.
  • Clogged kitchen sink drain – If the dishwasher drains into the sink drain, a blockage there will prevent dishwasher drainage.
  • Failed drain pump motor – The drain pump impeller or motor has failed.

How to Troubleshoot

  1. Clean the filter – Remove and thoroughly rinse the filter assembly at the bottom of the tub.
  2. Check drain hose – Inspect for kinks behind the dishwasher. Ensure it has a high loop or air gap before connecting to the sink drain.
  3. Run sink disposal – If you have a garbage disposal, run it to clear any blockage at the drain connection point.
  4. Reset – Press Cancel/Drain to trigger a manual drain cycle.

When to Call a Professional

A failed drain pump needs replacement. Call 844-752-7887 to schedule Monogram dishwasher service.

Need Help? If the error code hasn't resolved after basic troubleshooting, call our certified Monogram technicians at 844-752-7887 for professional diagnosis and same-day repair.