What 999 means on your GE dishwasher (ge 999 error)
A ge 999 error, sometimes shown as “Leak Detected,” is a verified GE error code confirmed on GE’s own support pages: it means the dishwasher’s Floor Protect system has sensed water in the base pan and shut the unit down as a protective response before water can spread further. This is a safety-oriented alert and should not be ignored or reset repeatedly without checking for an actual leak.
Symptoms
The signs below help confirm you are dealing with this condition rather than a different problem on your GE dishwasher. You may notice one of them or several together, and they can appear gradually or suddenly after a power event, a wash or cook cycle, a spill, or recent installation or service.
- The display shows 999 or “Leak Detected”
- The dishwasher will not start a new cycle
- Water is visible under or around the base of the unit
- The unit shuts down mid-cycle in some cases
Common causes
Several different problems can produce these symptoms. Working through the most likely causes in order separates a quick owner-level check from a problem that needs trained service and the correct GE parts.
- Over-foaming from the wrong detergent — dish soap or too much detergent can trip the leak sensor
- Genuine internal leak — a hose connection, tub seal, or float switch failure is letting water reach the base pan
- Float switch malfunction — the sensor itself is misreading
Troubleshooting steps you can try
Work through these checks in order before calling for service. Stop wherever you are unsure, or where mains voltage, gas, a hot oven cavity, water, or a sealed component is involved, and hand the rest to a qualified technician.
- Confirm you are using proper dishwasher detergent in the correct amount, never dish soap.
- Check for standing water under or around the base of the unit.
- Leave the dishwasher powered off and the water supply off until a leak is ruled out.
- If 999 returns, treat it as a genuine leak and stop running cycles.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the float switch, base pan leak sensor, tub seals, and hose connections. The correct part for your GE dishwasher is matched from the model and serial number, and genuine OEM components are fitted through trusted parts suppliers rather than generic substitutes so performance, safety, and the appliance long working life are all protected. Confirming the failed part before ordering avoids replacing more than the problem actually requires.
When to call a technician
999/Leak Detected that returns after ruling out over-foaming needs an experienced technician to trace the leak and test the float switch and tub seals on your GE dishwasher. Because this condition is rated High severity, it is safest to stop using the dishwasher and arrange service promptly rather than keep retrying, and to shut off power or water at the source if anything looks, smells, or sounds unsafe. As an independent repair service we are not affiliated with the manufacturer, and we work only with experienced, skilled technicians and genuine OEM parts from trusted parts suppliers, with our workmanship backed by a 30-day labor warranty. When you book, have your GE dishwasher model and serial number ready so the right part for your exact build can be matched before the visit and the 999 condition resolved in as few trips as possible.
Related help and GE resources
If the 999 condition keeps returning after these checks, book GE dishwasher repair, browse our dishwasher error-code guides and step-by-step repair guides, or schedule service in your area on our locations page. See also the related C4 double-fill after power failure. For full manufacturer specifications and model lookup, visit ge.com.
