Maytag Washer Diagnostic Mode: How to Enter and Read Codes

Quick Answer

Enter Maytag washer diagnostic mode by turning the cycle dial: right one click, right one click, right one click, left one click from the 12 o'clock start position, all within 6 seconds. All indicator lights should flash to confirm entry. Press Start to run automatic component tests.

There is no single diagnostic mode button combination that works on all Maytag washers. The method depends on the model line. Bravos/Centennial top-load: rotate the mode dial 3 clicks right, 1 click left, 1 click right (all within 6 seconds with lid open). Bravos XL electronic: press any 3 buttons in sequence 1-2-3, 1-2-3, 1-2-3. Maxima front-load: press Drain/Spin, then Options, then Drain/Spin within 5 seconds. In diagnostic mode, the machine runs each component (inlet valves, drain pump, motor at various speeds, door lock) and displays a code indicating pass or fail.

MaytagWasherSeverity: lowDifficulty: intermediate

Time to Fix

15–90 min

Difficulty

intermediate

Parts Cost

—

Tools Needed

None

Wrong code?

Not seeing DIAG on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

reset vs diagnostic mode

RESET

interpret codes found in diagnostics

HUB

identical procedure on shared Whirlpool platform

WhirlpoolDIAG

What Does the DIAG Code Mean?

Maytag diagnostic mode is a built-in service routine that activates each major component in sequence and records any failures. The entry sequence differs between model lines because Maytag uses different control board families across the Centennial, Bravos, and Maxima product lines.

Most Likely Causes

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

Need to retrieve stored error codes not displayed during normal operation40%

Technician or advanced DIYer running component-level tests36%

Need to confirm a repair was successful before running full load24%

Symptoms You May Notice

Error code appeared then cleared on its own
Washer runs but shows a code you need to decode
Technician or owner needs to pull fault history

Can you reset a Maytag washer to clear the DIAG code?

To exit diagnostic mode: press Power/Cancel button or unplug the washer. Running diagnostic mode does not automatically clear stored error codes.

Diagnostic Checklist

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

Identify model type and select the correct entry sequence

The diagnostic entry sequence is different for each Maytag model line. Check the model number on the label inside the lid (top-load) or inside the door frame (front-load). Bravos/Centennial with rotary dial: use the dial rotation sequence. Bravos XL or models with push-button controls: use the button sequence. Maxima front-load (MHW series): use the Drain/Spin sequence.

Enter diagnostic mode on Bravos and Centennial (dial models)

Enter diagnostic mode on Bravos XL and push-button models

Enter diagnostic mode on Maxima front-load (MHW series)

Advance through tests and record fault codes

Exit diagnostic mode

Frequently Asked Questions

How do I enter diagnostic mode on a Maytag Centennial washer?

Open the lid. With the lid open, rotate the cycle selector dial: 3 clicks clockwise, then 1 click counterclockwise, then 1 click clockwise. Complete all three steps within 6 seconds. All indicator lights on the control panel will flash simultaneously to confirm entry. Close the lid and press Start to begin the first diagnostic test. If the lights do not flash, wait 30 seconds and repeat the sequence more quickly.

What does C:00 mean in Maytag diagnostic mode?

C:00 is typically the starting point of the diagnostic sequence on Maxima front-load models - it means the washer has successfully entered diagnostic mode and is at the beginning of the test sequence. As you press Start to advance through tests, the display increments through test numbers. A C:XX code displayed during a specific test indicates a fault in the component being tested at that step. C:00 by itself at entry is not a fault code.

Will diagnostic mode reset my error codes?

No. Running diagnostic mode reads stored codes but does not clear them. The codes remain stored in the control board memory until the underlying fault is repaired and the board is power-cycled (unplugged for 60 seconds). This is intentional - you want the codes to persist so you can diagnose the fault across multiple attempts.

Can running diagnostic mode damage my washer?

No. Diagnostic mode is a built-in factory test used by Maytag technicians and is safe to run. It activates each component in a controlled sequence at reduced loads compared to a full wash cycle. The only precaution: keep hands and loose clothing away from the drum opening during the motor spin tests, as the drum will rotate at speed. The tests run automatically and stop at the next press of Start.

Related Maytag Washer Error Codes

Code: RESETHow to Reset a Maytag Washer Code: HUBAll Maytag Washer Error Codes: Complete Lookup Guide

Same Fix on Other Brands

Whirlpool washerDIAG: Whirlpool Washer Diagnostic Mode

Same Fix Works on These Brands

Maytag 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 Guide Maytag washerHow to Reset a Maytag Washer (3 Methods That Work)Maytag washerMaytag Washer Troubleshooting: Fix 12 Common Problems Maytag washerMaytag Washer LOC Code: How to Unlock the Controls Maytag washerMaytag Washer Not Draining? Here's What to Check

Models Known to Experience DIAG Errors

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

MVWC415EW, MVWB835DW, MVWB765FW, MVWX655DW, MVWB965HC, MHW7000XW, MHW5500FW, MHW6000XW, MVWC465HW, MHW8100DC

Last verified for technical accuracy on March 14, 2026