Error Codes
What dishwasher brands are made by Whirlpool?
Whirlpool Corporation manufactures dishwashers sold under several brand names, including Whirlpool, KitchenAid, Maytag, JennAir, and Amana. If you are shopping parts for a Whirlpool-built unit like model DU943PWKT0, the brand on the door can help narrow down the correct parts list and diagrams.
These are widely recognized Whirlpool-owned brands that commonly share design platforms across product lines:
- Whirlpool
- KitchenAid
- Maytag
- JennAir
- Amana
Even when two dishwashers look similar, parts can vary by model series, control style, and tub design. We recommend:
- Match the full model number on the rating label (for this unit: DU943PWKT0).
- Use the brand name to confirm you are in the right parts catalog (Whirlpool vs. other manufacturers).
- Compare the part description and mounting style before ordering.
- For leak or door-fit issues, start with sealing and latch components.
| Symptom | Part to check first | Example part on this model |
|---|---|---|
| Water leaking at the door | Door seal | Dishwasher door seal WPW10509257 |
| Door won’t stay closed | Door latch | Dishwasher door latch WP3380854 |
| Poor wash coverage | Spray arm and seals | Dishwasher spray arm WP8268874 |
Whirlpool-built dishwashers across different brands can share similar layouts, but the exact fit still depends on the model number. Using DU943PWKT0 plus the correct brand family helps prevent ordering a look-alike part that will not seal, latch, or mount correctly.
Last updated: February 2026
What does F4 mean on a Whirlpool dishwasher?
On Whirlpool dishwasher model DU943PWKT0, an F4 code commonly points to a drain problem (the dishwasher is not pumping water out as expected). In most cases, clearing a blockage in the drain path or fixing a drain component restores normal operation.
- Cancel the cycle, then wait 1 to 2 minutes to see if it tries to drain.
- Remove standing water (cup or wet vac) so you can inspect the sump area.
- Check the sink drain and garbage disposal inlet (knockout plug issues are common after installs).
- Inspect the drain hose for kinks, crushing, or a low loop problem.
- Look for debris around the pump inlet area (labels, glass, seeds).
If the drain path is clear but the unit still will not drain, these model-compatible parts are common fixes:
- Dishwasher drain hose WP3374077 (split hose, internal clog, or collapsed hose)
- Dishwasher float assembly WP3376397 (overfill protection stuck up can interrupt normal operation)
| What you notice | Most likely cause | What we do next |
|---|---|---|
| Water remains, no drain sound | Blocked hose or drain path | Inspect hose, air gap (if used), disposal inlet |
| Hums but drains slowly | Partial clog or restricted hose | Flush/replace drain hose |
| Random stopping, odd fill behavior | Float stuck or float switch issue | Clean/inspect float assembly |
After correcting the cause, we reset the control to clear the fault and retest a drain:
- Use the cancel/drain function (if your control has it).
- If the dishwasher is unresponsive or keeps faulting, follow how to reset a Whirlpool dishwasher.
A drain fault can leave dirty water in the tub, cause odors, and trigger repeated cycle interruptions. Fixing the drain path early also helps protect the pump motor and improves wash performance.
Last updated: February 2026
What's the most common problem with a Whirlpool dishwasher?
The most common Whirlpool dishwasher problem we see on models like DU943PWKT0 is drainage trouble: water left in the tub because the drain path is restricted or the drain system is not moving water out. Close behind are poor cleaning, leaks, and drying complaints.
- Standing water after the cycle: drain hose restriction, clogged sump area, or a drain/pump issue
- Dishes still dirty: spray arm holes blocked, low fill, or weak wash circulation
- Leaks at the door: worn or mis-seated door seal
- Not drying well: heater circuit issue, rinse aid problems, or short cycles
- Won’t start or stops mid-cycle: latch not closing fully, control reset needed, or an error condition
- Cancel/drain the cycle, then restart a normal cycle.
- Verify the sink drain and garbage disposal are clear (a blocked sink drain can back up the dishwasher).
- Inspect the drain hose routing for kinks and make sure it is looped high under the counter.
- Check the lower spray arm for clogged jets and confirm it spins freely.
- Confirm the door closes and latches firmly.
| Symptom | Common fix | Example part for this model |
|---|---|---|
| Leaking at the door | Replace the door gasket | Dishwasher door seal WPW10509257 |
| Poor cleaning, low spray | Clear/replace spray arm components | Dishwasher spray arm WP8268874 |
| Not filling or weak wash | Check water supply, then replace inlet valve if needed | Valve-inlt W10844024 |
| Not draining | Inspect hose and clamps; replace hose if restricted | Dishwasher drain hose WP3374077 |
Drain and wash problems often cascade: restricted draining leaves dirty water in the sump, which reduces cleaning performance and can create odors. Fixing the drain path early helps protect the pump motor and improves cycle results.
For control-related symptoms (blinking lights, beeps, or a cycle that won’t run), use our how to reset a Whirlpool dishwasher steps and then check our Whirlpool dishwasher error codes guide if the issue returns.
Last updated: February 2026
