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Maytag
Dishwasher

Model # MDB4800AWW Official Maytag dishwasher

Here are the diagrams and repair parts for Official Maytag MDB4800AWW dishwasher, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 133 parts  |
Dishwasher Spray Arm Assembly, Lower 99001788
#2

Pump & motor diagram

Dishwasher spray arm assembly, lower

Part #99001788

Replaced by #WP99001788

?
Manufacturer substitution
This part replaces 99001788. Substitute parts can look different from the original.
$53.71 | 
10% OFF Phone Price : $59.71
In Stock
Wax Motor 902899
#1

Rinse aid & soap dispenser diagram

Wax motor

Part #902899

Replaced by #WP902899

?
Manufacturer substitution
This part replaces 902899. Substitute parts can look different from the original.
$37.61 | 
14% OFF Phone Price : $43.61
In Stock
Dishwasher Washer 910069
#11

Tub diagram

Dishwasher washer

Part #910069

This item is not returnable
$32.33 | 
16% OFF Phone Price : $38.33
In Stock
Cabinet Screw 912799
#31

Tub diagram

Cabinet screw

Part #912799

This item is not returnable
$3.40
In Stock
Jade Dishwasher O-ring 99001979
#42A

Pump & motor diagram

Jade dishwasher o-ring

Part #99001979

$30.91
In Stock
Cable Clamp 400321
#27A

Tub diagram

Cable clamp

Part #400321

Replaced by #4396672

?
Manufacturer substitution
This part replaces 400321. Substitute parts can look different from the original.
$13.79 | 
13% OFF Phone Price : $15.79
In Stock
Tub Wheel 912548
#15

Track & rack assembly diagram

Tub wheel

Part #912548

Replaced by #WP99002342

?
Manufacturer substitution
This part replaces 912548. Substitute parts can look different from the original.
$8.40 | 
11% OFF Phone Price : $9.40
In Stock
Dishwasher Pump Housing Filter 99001791
#6

Pump & motor diagram

Dishwasher pump housing filter

Part #99001791

Replaced by #WP99001791

?
Manufacturer substitution
This part replaces 99001791. Substitute parts can look different from the original.
$40.28 | 
13% OFF Phone Price : $46.28
In Stock
Rinse Knob 903184
#2

Rinse aid & soap dispenser diagram

Rinse knob

Part #903184

Replaced by #WP6-903123

?
Manufacturer substitution
This part replaces 903184. Substitute parts can look different from the original.
$32.44 | 
16% OFF Phone Price : $38.44
In Stock
Tine Bowl 99001485
#8

Track & rack assembly diagram

Tine bowl

Part #99001485

Replaced by #12002218

?
Manufacturer substitution
This part replaces 99001485. Substitute parts can look different from the original.
$41.33 | 
13% OFF Phone Price : $47.33
In Stock

Most common symptoms to help you fix your dishwashers

Choose a symptom to see related dishwasher repairs.

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Why won't my dishwasher fill?

Main causes: water supply problem, stuck overfill float, clogged water inlet valve screen, water inlet valve failure…

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Why won't my dishwasher drain?

Main causes: clogged kitchen sink drain, clogged drain hose, drain check valve damaged, drain pump failure, control syst…

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Why does my dishwasher door drop open too fast?

Main causes: broken door spring, damaged or broken door hinge…

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Why can't I adjust the dishwasher rack height?

Main cause: damaged rack height adjuster…

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Why isn't my dishwasher getting dishes clean?

Main causes: improper loading, low water temperature, improper detergent dosage, detergent dispenser failure, spray arm …

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Why won't my dishwasher start?

Main causes: light switch beside the sink turned off, lack of power, bad dishwasher door switch, control system failure,…

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Why don't my dishes get dry?

Main causes: not using rinse aid, rinse aid dispenser failure, broken heating element, malfunctioning vent, drying fan f…

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Why does my dishwasher stop mid-cycle?

Main causes: broken door latch, tripped circuit breaker, broken heating element, faulty vent fan, sensor failure, contro…

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Why is my dishwasher noisy?

Main causes: glass or popcorn kernel stuck in the chopper blade, drain line vibrating against the cabinet, debris in was…

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Most common repair guides to help fix your dishwashers

These step-by-step repair guides will help you safely fix what’s broken on your dishwasher.

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How to replace a dishwasher heating element

How to replace a dishwasher heating element

Dishes not drying as fast as they should? The dishwasher heating element could be on the fritz. Here's how to install a …

Read more
Repair difficulty
Time required
 45 minutes or less
How to replace a dishwasher high-limit thermostat

How to replace a dishwasher high-limit thermostat

Follow these steps to replace the high-limit thermostat in your dishwasher if prevents the heating element from heating.…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher diverter motor

How to replace a dishwasher diverter motor

Upper spray arms not getting water? The diverter motor could be broken. Use this guide to replace it.…

Read more
Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your dishwashers

Use the advice and tips in these articles and videos to get the most out of your dishwasher.

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5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

Get tips on completing essential holiday cleaning tasks to brighten your home.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

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