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Error code reference

Maytag Dryer Error Code EXHAUST PROBE FAULT

Problem with the exhaust temperature sensor circuit.

Maytag codesMaytag dryer codes

Problem with the exhaust temperature sensor circuit.

First step from the service manual

Check exhaust temperature sensor and wiring; dryer runs with no heat for 3 minutes then shuts off all outputs until addressed.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What EXHAUST PROBE FAULT means on a Maytag dryer

The EXHAUST PROBE FAULT code on a Maytag dryer indicates a problem detected within the exhaust temperature sensor circuit. This sensor, sometimes called the exhaust thermistor or exhaust probe, monitors the temperature of the air exiting the drum through the exhaust duct. The control board uses continuous readings from this sensor to regulate heating cycles and protect the dryer from overheating. When the board detects a signal that falls outside the expected range, either an open circuit, a short, or an out-of-range resistance value, it triggers this fault.

When this fault is active, the dryer enters a specific fail-safe behavior: it will run without heat for approximately 3 minutes and then shut off all outputs until the fault is resolved. This behavior is intentional and designed to prevent damage to the appliance and the load inside it. The dryer will not resume normal heated operation on its own, meaning the underlying issue must be diagnosed and corrected before the machine will function properly again.

The most common causes involve the sensor itself or the wiring connecting it to the control board. The exhaust temperature sensor can fail due to age, heat exposure, or physical damage. Wiring harness problems such as broken connectors, pinched wires, or corrosion at the terminals are also frequent contributors. In less common cases, the control board itself may be at fault if it is unable to correctly read or process the sensor signal even when the sensor and wiring check out correctly.

Source: manufacturer service documentation.

Common causes of EXHAUST PROBE FAULT

  1. 01

    Failed exhaust temperature sensor

    Part replacement

    The exhaust temperature sensor can fail open or short out, sending a signal to the control board that falls outside the acceptable range. A multimeter check of the sensor's resistance can confirm whether it has failed.

  2. 02

    Damaged or disconnected wiring harness

    Wiring / connection

    The wiring between the exhaust sensor and the control board can suffer from broken connectors, pinched insulation, or corroded terminals, interrupting the circuit. Visually inspect the harness and check for continuity along the sensor wiring.

  3. 03

    Loose or corroded connector at the sensor

    Wiring / connection

    The connector at the sensor terminal can loosen over time or develop corrosion, causing an intermittent or complete loss of signal. Unplugging and reseating the connector and cleaning any corroded contacts can resolve this.

  4. 04

    Restricted exhaust duct causing abnormal temperature readings

    Wiring / connection

    A clogged or kinked exhaust duct can cause heat to back up and create temperature readings outside the normal operating window. Check the full exhaust path from the dryer to the exterior vent for blockages or restrictions.

  5. 05

    Faulty control board

    Part replacement

    If the sensor and all wiring check out correctly but the fault persists, the control board may be unable to properly read or interpret the sensor signal. This is the least common cause and is typically confirmed only after ruling out all other possibilities.

See the test procedure for each cause

Frequently asked questions about EXHAUST PROBE FAULT

What does EXHAUST PROBE FAULT mean on a Maytag dryer?
This code means the dryer's control board has detected a problem with the exhaust temperature sensor circuit. The sensor monitors the temperature of air leaving the drum, and when its signal falls outside the expected range, the fault is triggered. The dryer will run without heat for 3 minutes and then shut off all outputs as a safety measure. The issue must be diagnosed and repaired before normal operation can resume.
Can I fix the EXHAUST PROBE FAULT on my Maytag dryer myself?
Many of the common causes are accessible to a knowledgeable DIYer. Inspecting the wiring harness, checking connectors for corrosion, and testing the sensor with a multimeter are reasonable first steps. Replacing the exhaust temperature sensor is a relatively straightforward repair if the sensor is confirmed faulty. Control board replacement is more involved and may be better suited to a professional technician.
Is it safe to keep using my Maytag dryer when the EXHAUST PROBE FAULT is showing?
The dryer's fail-safe mode limits operation to 3 minutes without heat before shutting off, so the risk of overheating is reduced. However, the dryer will not function normally and you should not rely on it for drying loads. It is best to address the fault promptly rather than attempting to repeatedly restart the machine.
Will resetting my Maytag dryer clear the EXHAUST PROBE FAULT?
A reset may temporarily clear the fault code, but if the underlying problem with the sensor or wiring has not been corrected, the fault will return. The dryer's control board will detect the same out-of-range signal on the next cycle and trigger the code again. A lasting fix requires diagnosing and repairing the actual cause.
How much does it cost to repair the EXHAUST PROBE FAULT on a Maytag dryer?
If only the exhaust temperature sensor needs replacement, the repair is generally on the lower end of the cost spectrum, with parts typically ranging from $15 to $50 and professional labor adding $75 to $150 depending on your area. If the control board is at fault, parts alone can range from $100 to $300 or more. Getting a diagnostic visit from a technician before committing to parts can help avoid unnecessary expense.

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