Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher MECH-LATCH Error Fix: Door Latch Mechanism Failure

The dishwasher door will not latch securely, or the cycle will not start because the door switch does not detect a closed door. The latch mechanism is worn or broken. On Dacor dishwashers, the latch assembly includes a mechanical catch and an electrical switch. Check the door striker on the tub side for alignment. Test the door switch for continuity when engaged. Replace the door latch assembly if the mechanism is stiff, broken, or the switch is not closing.

High severity2 fixes available✨ Free fix available

Quick Answer

Error MECH-LATCH on the Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher means: Door Latch Mechanism Failure. The top-ranked community fix is “Replace Door Latch Assembly and Test Door Switch” (hard difficulty, ~45 min, DIY cost: $15-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · dishwasher

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many dishwasher repairs can be done safely at home, consider hiring a qualified technician if:

This is a high severity error — continued use may cause damage or a safety hazard
The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$180.

Other Dacor Models with Error MECH-LATCH

DMW2420S 24 in 1.2 cu ft 1000W Sensor Microwave Oven

microwave · 2 fixes

Other Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher Error Codes

Water Level Sensor Error

2 fixes

Wash Pump Motor Error

2 fixes

Water Supply Error — Not Filling

2 fixes

Drain Error — Not Draining

2 fixes

Low Water Level Error

2 fixes

Internal Communication Error

2 fixes

Button or Key Stuck

2 fixes

Heater Error — Water Not Heating

2 fixes

People Also Ask About Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher Error MECH-LATCH

What does error code MECH-LATCH mean on a Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher?

Error code MECH-LATCH on the Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher means: Door Latch Mechanism Failure. The dishwasher door will not latch securely, or the cycle will not start because the door switch does not detect a closed door. The latch mechanism is worn or broken. On Dacor dishwashers, the latch assembly includes a mechanical catch and an electrical switch. Check the door striker on the tub side for alignment. Test the door switch for continuity when engaged. Replace the door latch assembly if the mechanism is stiff, broken, or the switch is not closing.

How do I fix error code MECH-LATCH on my Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher?

The most successful fix is "Replace Door Latch Assembly and Test Door Switch" (hard difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code MECH-LATCH on a Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher serious?

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Can I fix Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher error MECH-LATCH myself?

Yes — the top-ranked community fix ("Replace Door Latch Assembly and Test Door Switch") is rated hard difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Needle-nose pliers.

How much does it cost to repair Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher error MECH-LATCH?

DIY cost: $15-$25. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher have?

The Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher has 8 other known error codes, including: 1E (Water Level Sensor Error), 3E (Wash Pump Motor Error), 4E (Water Supply Error — Not Filling), 5E (Drain Error — Not Draining), 9E (Low Water Level Error), and 3 more.

Which other Dacor models have the MECH-LATCH error?

Error code MECH-LATCH also appears on 1 other Dacor model: DMW2420S 24 in 1.2 cu ft 1000W Sensor Microwave Oven. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher have?

The Dacor DDW24M999US 24 in 42 dBA WiFi Connected Modernist Series Dishwasher has 8 other known error codes:

1E — Water Level Sensor Error (2 fixes)
3E — Wash Pump Motor Error (2 fixes)
4E — Water Supply Error — Not Filling (2 fixes)
5E — Drain Error — Not Draining (2 fixes)
9E — Low Water Level Error (2 fixes)
AE — Internal Communication Error (2 fixes)
bE — Button or Key Stuck (2 fixes)
HE — Heater Error — Water Not Heating (2 fixes)

Which other Dacor models have the MECH-LATCH error?

Error code MECH-LATCH also appears on 1 other Dacor model:

DMW2420S 24 in 1.2 cu ft 1000W Sensor Microwave Oven (microwave) · 2 fixes

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