Owner’s manual
Error Codes
How do I know the dimensions of my dishwasher?
For LG dishwasher model LDT5665BB, the published product dimensions are 23 3/4 in. wide x 24 5/8 in. deep x 33 5/8 in. high. We recommend confirming your cabinet opening and clearance measurements with a tape measure before ordering parts or planning a replacement; see the LDT5665BB owner's manual for the dimension diagram.
How to measure your dishwasher (the quick, accurate way)
Measure in inches with the dishwasher installed (or pulled slightly forward if needed):
- Width: left cabinet wall to right cabinet wall at the front of the opening
- Height: floor to underside of countertop at the front and back (floors can slope)
- Depth: from the back wall to the front edge of the cabinet opening (not the door)
- Door clearance: ensure the door can open fully without hitting adjacent cabinets
- Side clearance: if installed in a corner, allow space so the door and racks clear the wall
Dimensions vs. cabinet opening (what to compare)
Your dishwasher’s listed dimensions help you identify the unit size; your cabinet opening determines fit and installation clearance.
| What you’re measuring | What it tells you | Typical use |
|---|---|---|
| Product dimensions | Size of the dishwasher itself | Replacement planning, confirming standard size |
| Cabinet opening | Space available in cabinetry | Fit, leveling, routing water/drain/power |
Why it matters
Accurate measurements prevent installation problems like a dishwasher that will not slide in flush, pinched water supply lines, or a door that cannot open fully. It also helps when selecting LG parts (like a door seal or rack components) that match the correct model.
Last updated: February 2026
What is the most common problem with the LG dishwasher?
The most common issues we see with the LG LDT5665BB dishwasher are poor cleaning and water-handling problems (not draining, not filling, or stopping mid-cycle). In many cases, the fix starts with cleaning filters, confirming hot water supply, and checking for a door-latch or pump-related fault shown by an error code in the LDT5665BB owner's manual.
Most common symptoms and what they usually point to
- Not draining: clogged drain hose, clogged filters, blocked air gap or disposal, or a failing drain pump
- Not filling: kinked/clogged inlet hose, water supply issue, or a failing inlet valve
- Stops mid-cycle or won’t run: door not latching, control sensing a fault, or a motor-related issue
- Cloudy film on dishes: hard water minerals reacting with detergent; too much detergent
- Poor drying: cool incoming water, rinse aid empty/low, plastics holding water droplets
Quick checks we recommend first (fast, no parts)
- Run the kitchen hot water until it’s hot before starting a cycle (helps cleaning and drying).
- Clean the dishwasher filters and remove any debris in the sump area.
- Inspect the drain hose for kinks and check the air gap or disposal for clogs.
- Confirm the door closes firmly and the latch engages.
- If you see an error code, match it to the troubleshooting table in the manual.
Common part fixes (when cleaning and hoses check out)
| Symptom | Likely part area | Example model-matched part |
|---|---|---|
| Won’t fill or fills slowly | Water inlet system | Dishwasher water inlet valve 5221DD1001E |
| Won’t drain or drains poorly | Drain system | Dishwasher drain pump ABQ75742501 |
| Stops and won’t run if door isn’t sensed closed | Door latch system | Dishwasher door lock AGM76209501 |
Why it matters
Dishwashers like the LG LDT5665BB use less water than older designs, so restricted flow (dirty filters, clogged hoses) and low water temperature show up quickly as poor cleaning, draining errors, and longer cycles. Keeping filters clean and ensuring hot water at the start prevents many repeat problems.
Last updated: February 2026
What is the 10 year warranty on LG dishwasher motor?
For LG dishwasher model LDT5665BB, the Direct Drive motor is covered for 10 years from the date of original retail purchase when it fails due to a defect in materials or workmanship; labor and in-home service to replace the motor are your responsibility. See the warranty section in the LDT5665BB owner's manual.
What the 10-year motor warranty includes
- Coverage term: 10 years from original retail purchase date
- Covered component: Direct Drive motor
- Covered issue: defects in materials or workmanship under normal home use
- Remedy: LG may repair or replace (at LG’s option)
- Proof needed: original retail purchase documentation
What is not included (common cost surprises)
Even with the 10-year motor coverage, these costs typically still apply:
- Labor charges for diagnosis and replacement
- On-site/in-home service fees
- Any non-motor parts needed to access or reinstall the motor (as determined during service)
Warranty coverage snapshot
| Warranty period | What’s covered | Who pays labor/service? |
|---|---|---|
| 1 year | Parts and labor | LG covers labor/service |
| 5 years | Electronics and racks | Customer pays labor/service |
| 10 years | Direct Drive motor | Customer pays labor/service |
| Limited lifetime | Tub and stainless door liner | Customer pays labor/service |
Why it matters
If your LDT5665BB has a motor-related symptom (won’t wash, unusual motor noise, motor error), the part itself may be covered for a long time, but planning for service labor helps you decide whether to schedule repair, troubleshoot further, or compare repair cost to replacement.
Last updated: February 2026
What is the average lifespan of an LG dishwasher?
LG dishwashers typically last 10 to 15 years with normal home use. For the LG LDT5665BB, consistent cleaning, correct detergent use, and good water conditions help you reach the high end of that range; see the LDT5665BB owner's manual for model-specific care and operating guidance.
Typical lifespan and what affects it
Most dishwasher life is determined by how hard the unit works and how clean the wash system stays.
- Water quality (hard water causes mineral buildup)
- How often you run cycles (daily use wears pumps and seals faster)
- Loading habits (overloading reduces cleaning and strains racks/spray)
- Maintenance (filter cleaning and periodic tub cleaning)
- Heat and drying settings (higher heat can improve results but adds stress over time)
Maintenance that extends life (high impact)
Use these habits to reduce wear on key components like the drain pump, inlet valve, and door seals.
- Clean the filters regularly and remove debris from the sump area
- Run hot water at the sink before starting a cycle if the dishwasher is far from the water heater
- Use rinse aid and adjust the rinse aid level if drying performance is weak
- Avoid blocking spray arms with tall pans or oversized plates
- Inspect for small leaks early; replace worn seals before they cause bigger problems
What “end of life” usually looks like
When a dishwasher is nearing the end of its service life, we typically see repeat issues in a few systems.
| Symptom | Common area involved | What to check first |
|---|---|---|
| Not draining | Drain path / pump | Hose kinks, air gap/disposal clog, filter debris |
| Not filling | Water supply / inlet | Supply valve open, inlet hose kink, screen blockage |
| Leaks | Door/tub sealing | Door seal condition, tub seal area, proper leveling |
| Poor cleaning | Spray and filtration | Filters, spray arm holes, loading pattern |
Why it matters
A dishwasher that is cleaned and supplied with consistent hot water runs more efficiently, cleans better, and puts less strain on the motor, pumps, and seals. That directly improves reliability over the 10 to 15 year lifespan.
Last updated: February 2026
