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Error code reference

Maytag Dryer Error Code Lo

Voltage detected below 90 VAC for 8 seconds.

Maytag codesMaytag dryer codes

Voltage detected below 90 VAC for 8 seconds.

First step from the service manual

Check incoming power supply voltage.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Lo means on a Maytag dryer

The Lo error code on a Maytag dryer indicates that the control board has detected incoming line voltage below 90 VAC for a continuous period of 8 seconds. Electric dryers require a 240 VAC supply delivered across two hot legs of 120 VAC each, and gas dryers require a stable 120 VAC supply. When the measured voltage drops below 90 VAC and remains there for the full 8-second window, the dryer's control system triggers this code to alert the user and technician that the power supply is inadequate to safely operate the appliance.

The most common source of this condition is an issue at the electrical supply rather than within the dryer itself. Problems such as a partially tripped circuit breaker, a failing utility transformer, loose or corroded wiring connections at the outlet or service panel, or a high-resistance neutral connection can all cause voltage to sag below the required threshold. During periods of high neighborhood electrical demand or following storm-related grid issues, utility-side voltage drops are also possible.

Because the dryer's internal components are not typically the cause of this code, the first diagnostic step is always to measure the actual incoming voltage at the dryer's power outlet or terminal block using a multimeter. If voltage reads below 90 VAC or is otherwise abnormal, the investigation should continue upstream at the breaker panel and, if necessary, with the utility provider. Only after confirming proper incoming voltage should internal wiring and control components be examined.

Source: manufacturer service documentation.

Common causes of Lo

  1. 01

    Partially tripped circuit breaker

    Wiring / connection

    A breaker that has partially tripped can still allow some current through while dropping voltage below the required level. Check the breaker panel for a breaker that appears to be in an intermediate position rather than fully on or fully off, and reset it by switching it fully off then back on.

  2. 02

    Low utility supply voltage

    Wiring / connection

    Utility grid issues, including high demand periods or transformer problems, can cause incoming voltage to drop below 90 VAC. Measure voltage at the outlet with a multimeter and contact your utility provider if the reading is consistently low.

  3. 03

    Loose or corroded wiring at the outlet or terminal block

    Wiring / connection

    High-resistance connections at the dryer's power outlet or the terminal block on the dryer itself can cause a significant voltage drop under load. Inspect and tighten all connections, looking for signs of overheating, corrosion, or melted insulation.

  4. 04

    Failing wall outlet or dryer cord

    Part replacement

    A worn or damaged 240 VAC outlet or a dryer power cord with a damaged conductor can introduce resistance that reduces voltage at the dryer. Check the outlet for discoloration or heat damage and test the cord for continuity.

  5. 05

    Faulty control board

    Part replacement

    In rare cases where incoming voltage has been confirmed normal at the outlet and all wiring is secure, the control board's voltage sensing circuit may be malfunctioning and incorrectly triggering the Lo code. This is an uncommon cause and should only be considered after all power supply checks have been completed.

See the test procedure for each cause

Frequently asked questions about Lo

What does Lo mean on a Maytag dryer?
The Lo code means the dryer's control board has detected incoming voltage below 90 VAC for 8 consecutive seconds. This threshold is the minimum voltage required for safe dryer operation. The code is designed to protect the appliance from running on insufficient power, which could damage motors and electronic components. In most cases, the problem originates with the home's electrical supply rather than the dryer itself.
How do I fix the Lo error code on my Maytag dryer?
Start by checking your circuit breaker panel for a tripped or partially tripped breaker and reset it if needed. Next, use a multimeter to measure the voltage at the dryer's wall outlet to confirm it is at or above the required level. If voltage is low at the outlet, the issue likely lies with household wiring or the utility supply, and an electrician should be consulted. If outlet voltage is correct, inspect the dryer's power cord and terminal block connections for any looseness or damage.
Is it safe to use my Maytag dryer when the Lo code is displayed?
No, you should not attempt to run the dryer while the Lo code is active. Operating the dryer on insufficient voltage can overheat motors and other components, potentially causing further damage to the appliance or creating a fire hazard. Resolve the underlying power supply issue before resuming use.
Will resetting my Maytag dryer clear the Lo error code?
Simply resetting or unplugging the dryer will not permanently clear the Lo code if the underlying low voltage condition still exists. The control board will detect the low voltage again within 8 seconds of operation and re-trigger the code. The code will only stay cleared once the incoming supply voltage is restored to an adequate level.
How much does it cost to repair a Maytag dryer showing the Lo code?
Repair costs vary widely depending on the root cause. If the fix is a tripped breaker reset, there is no cost involved. Outlet replacement or wiring repairs by an electrician typically range from $75 to $250 or more depending on the complexity. If the dryer's control board requires replacement, parts and labor can range from $150 to $400 or higher. Getting a diagnosis before committing to repairs is recommended since many Lo code cases are resolved through electrical supply corrections rather than dryer part replacement.

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