Maytag Dishwasher Error Codes: Complete Guide to Every Fault Code

Quick Answer

Maytag dishwashers share the Whirlpool DTM platform but carry different OEM part numbers and a specific known issue unique to the MDB8959 series: the spray arm bearing hub wears over time and allows the lower spray arm to drop, partially blocking the filter inlet. This single mechanical issue can trigger both F8 E4 (wash motor struggling under increased load) and F9 E1 (drain slowed by partial blockage) simultaneously. Before replacing any parts on a Maytag showing either code, check for spray arm hub wobble. Common codes are F8 E4 (wash motor fault), F9 E1 and E1 F9 (drain timeout), F6 E1 (water inlet fault), and H2O (no water detected).

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About These Maytag Dishwasher Error Codes

Maytag dishwashers use the Whirlpool DTM platform. Key Maytag-specific angle: inspect the lower spray arm bearing hub for wobble before replacing motors or pumps -- the MDB8959 hub wear issue causes both F8 E4 and F9 E1 simultaneously.

Most Common Error Codes

Lower spray arm bearing hub worn, arm drooping and blocking filter (MDB8959 series)40%

Clogged drain filter causing F9 E1 drain timeout24%

Wash motor impeller cracked or jammed (F8 E4)14%

Water supply valve closed or hose kinked (H2O)12%

Inlet valve solenoid failed (F6 E1)10%

Symptoms You May Notice

F8 E4, F9 E1, or E1 F9 displayed on control panel
Dishwasher fills then stops without washing
Standing water remaining after cycle
No water entering the tub
Multiple codes appearing in the same cycle

Tools Required for Diagnosis

MultimeterTorx T20 screwdriverFlathead screwdriver

How to Identify Your Error Code

Write down the exact code or codes displayed

Write down the exact code or codes displayed. On MDB8959 series Maytag dishwashers, if you see F8 E4 and F9 E1 at the same time or in the same cycle, inspect the lower spray arm bearing hub before any other diagnosis.

To check the spray arm hub

Hold the Cancel/Drain button for 3 seconds to attempt a soft reset

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	OEM Number	Estimated Price
Wash MotorWPW10765009 · $80–$150	WPW10765009	$80 – $150
Drain PumpWPW10348269 · $28–$48	WPW10348269	$28 – $48
Water Inlet ValveWPW10327249 · $22–$38	WPW10327249	$22 – $38

Verify part fitment for your Maytag model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $86 (Parts) vs $700 (New Machine)

Frequently Asked Questions

Are Maytag dishwasher error codes the same as Whirlpool?

The codes themselves (F8 E4, F9 E1, F6 E1, H2O) are identical across the shared DTM platform. The key differences are the OEM part numbers -- Maytag uses a WP prefix (WPW10765009 vs Whirlpool's W10765009) -- and the MDB8959-specific spray arm bearing hub wear issue that does not appear in Whirlpool documentation.

Why do F8 E4 and F9 E1 appear together on some Maytag dishwashers?

On MDB8959 series dishwashers, the spray arm bearing hub wears and allows the lower arm to droop down, partially blocking the filter inlet. This restriction makes the drain pump work harder (F9 E1) and also causes backpressure that strains the wash motor (F8 E4). Both codes appear because a single mechanical issue is stressing two components. Fix the hub first before replacing parts.

Related Maytag Dishwasher Error Codes

Code: F8 E4Maytag Dishwasher F8 E4 Error Code: Wash Motor Fault Code: F9 E1Maytag Dishwasher F9 E1 Error Code: Drain Timeout Code: E1 F9Maytag Dishwasher E1 F9 Error Code: Drain Timeout Code: F6 E1Maytag Dishwasher F6 E1 Error Code: Water Inlet Fault Code: H2OMaytag Dishwasher H2O Error Code: No Water Detected

Same Fix Works on These Brands

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

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Models Known to Experience HUB Errors

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

MDB8959SFZ, MDB8989SHZ, MDB7959SHZ, MDB8959SHZ, MDBH979SAB

Last verified for technical accuracy on March 14, 2026