Warning: Disconnect power before servicing.
ErrBase

Whirlpool Dishwasher F9 E1 Error Code: Drain Timeout

Quick Answer

F9 E1 on a Whirlpool dishwasher is a drain timeout fault identical in cause to E1 F9. It appears on newer DTM platform display models where the code order is reversed. The fix is the same: clean the twist-lock filter cylinder first, then check drain hose routing, then test the drain pump.

F9 E1 on a Whirlpool dishwasher is a drain timeout fault identical in cause to E1 F9. It appears on newer DTM platform display models where the code order is reversed. The fix is the same: clean the twist-lock filter cylinder first, then check drain hose routing, then test the drain pump. F9 E1 and E1 F9 are different code displays for the same hardware fault.

WhirlpoolDishwasherSeverity: moderate92% DIY Success
Time to Fix
5–45 min
Difficulty
beginner
Parts Cost
$28 – $45
Tools Needed
Multimeter, Soft-bristle brush

What Does the F9 E1 Code Mean?

F9 E1 is the newer display format for the same drain timeout fault as E1 F9. The drain pump ran but could not empty the tub in time. The filter cylinder is responsible in over half of all cases.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Clogged fine-mesh filter cylinder blocking pump suction40%
Drain hose kinked or installed without a high loop24%
Drain pump motor failed22%
Garbage disposal knockout plug left in place after install14%

Symptoms You May Notice

  • F9 E1 code displayed at end of wash or rinse cycle
  • Water standing in tub after cycle ends
  • Cycle stops early and door unlocks mid-drain
  • Drain pump audible for full drain window but tub remains full

Can you reset a Whirlpool dishwasher to clear the F9 E1 code?

Press and hold Cancel/Drain for 3 seconds. After addressing the cause, restart the dishwasher. If F9 E1 reappears on the first new cycle, the underlying drain path is still restricted.

Tools Required for Diagnosis

MultimeterSoft-bristle brushFlathead screwdriver

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Pull out the lower rack

Pull out the lower rack. Twist the cylindrical filter counterclockwise and lift it out. Remove the flat coarse mesh screen beneath it. Rinse both under running water, scrubbing the fine-mesh cylinder with a brush. Reinstall both pieces before testing.

2

Open the cabinet under the sink and trace the dishwasher drain hose

3

With power disconnected

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Drain PumpW10348269 · $28–$45

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $37 (Parts) vs $700 (New Machine)

Frequently Asked Questions

Is F9 E1 the same as E1 F9?
Yes. They represent the same drain timeout fault. Whirlpool reversed the code display order on newer model control boards. The diagnostic steps and replacement parts are identical.
My new garbage disposal was just installed and now I get F9 E1 -- why?
New garbage disposals ship with a knockout plug in the dishwasher drain port. If the plumber forgot to punch it out, the dishwasher drain is completely blocked. Disconnect the drain hose from the disposal and verify the port is open.

Related Whirlpool Dishwasher Error Codes

Code: E1 F9Whirlpool Dishwasher E1 F9 Error Code: Drain Timeout FixCode: F6 E1Whirlpool Dishwasher F6 E1 Error Code: Water Inlet Fault

Same Fix Works on These Brands

Whirlpool shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Maytag washerMaytag Washer 5D Code: Too Many Suds (Fix It Fast)Maytag washerAll Maytag Washer Error Codes: Complete Lookup GuideMaytag washerHow to Reset a Maytag Washer (3 Methods That Work)Maytag washerMaytag Washer Troubleshooting: Fix 12 Common ProblemsMaytag washerMaytag Washer LOC Code: How to Unlock the ControlsMaytag washerMaytag Washer Not Draining? Here's What to Check

Models Known to Experience F9 E1 Errors

This repair applies to most Whirlpool dishwashers with this error code. Common model numbers include:

WDT780SAEM, WDF550SAHZ, WDT730PAHZ, WDT750SAHZ, WDT970SAHZ, WDF518SAHM, WDT720PADE

Last verified for technical accuracy on March 14, 2026