mypros+
Error code reference

Whirlpool Dryer Error Code 87

Upper Axial Probe Fault

Whirlpool codesWhirlpool dryer codes

Upper Axial Probe Fault

MyPros+ Max

Get the full diagnostic procedure for 87.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 87 means on a Whirlpool dryer

Error code 87 on a Whirlpool dryer indicates an Upper Axial Probe Fault. The axial probe is a temperature-sensing component positioned along the drum's axis of rotation, used to monitor thermal conditions within the drum cavity. When the control board detects a reading from this probe that falls outside expected parameters, whether an open circuit, a short, or an out-of-range resistance value, it flags the fault and may interrupt normal drying operation to prevent potential overheating or inaccurate cycle control.

The upper axial probe works as part of the dryer's thermal monitoring system, feeding real-time temperature data to the main control board. A fault condition can stem from a failed probe element, damaged wiring in the probe harness, corroded or loose connectors, or a defective control board that is misreading the probe signal. Because the probe is positioned in a high-heat environment, its sensing element and associated wiring are subject to gradual thermal degradation over time.

Diagnosing this fault typically involves inspecting the probe's wiring harness for breaks, burns, or loose terminal connections, and then testing the probe itself for proper resistance output at a known temperature. If the probe and wiring check out correctly, the control board should be evaluated as a potential source of the fault. Addressing this code promptly is important because inaccurate temperature sensing can lead to ineffective drying cycles or unsafe operating conditions.

Source: manufacturer service documentation.

Common causes of 87

  1. 01

    Failed Upper Axial Probe

    Part replacement

    The probe's sensing element can burn out or degrade over time due to repeated heat exposure, causing it to produce out-of-range or no resistance readings. Testing the probe with a multimeter at a known temperature will confirm whether it has failed.

  2. 02

    Damaged or Disconnected Wiring Harness

    Wiring / connection

    The wiring connecting the upper axial probe to the control board can suffer burns, breaks, or loose terminal connections, interrupting the signal. Visually inspect the harness along its full length for heat damage, fraying, or corrosion at connectors.

  3. 03

    Corroded or Loose Connector Terminals

    Wiring / connection

    Moisture or heat cycling can cause connector terminals at the probe or control board to corrode or back out, creating intermittent or complete signal loss. Cleaning or reseating the connectors may resolve the fault without replacing any parts.

  4. 04

    Defective Main Control Board

    Part replacement

    If the probe and all wiring test within spec, the control board itself may be misinterpreting the probe signal due to a failed input circuit. This is less common but should be evaluated after all other components are confirmed to be functioning correctly.

See the test procedure for each cause

Frequently asked questions about 87

What does 87 mean on a Whirlpool dryer?
Error code 87 on a Whirlpool dryer indicates an Upper Axial Probe Fault. This means the control board has detected an abnormal signal from the temperature probe located in the upper axial position within the drum cavity. The dryer may stop operating or behave erratically until the fault is resolved. The root cause is typically a failed probe, damaged wiring, or a loose connector.
Can I fix error code 87 on my Whirlpool dryer myself?
Some causes of error code 87 can be addressed without professional help, such as reseating a loose connector or inspecting the wiring harness for obvious damage. However, replacing the upper axial probe or the main control board requires comfort with appliance disassembly and basic electrical testing using a multimeter. If you are not comfortable working with internal dryer components, a qualified technician should perform the repair.
Is it safe to keep using my Whirlpool dryer with error code 87?
Continuing to operate the dryer with error code 87 active is not recommended. The upper axial probe is part of the thermal monitoring system, and a faulty reading means the dryer cannot accurately track internal temperatures. This could result in overheating, incomplete drying cycles, or unsafe operating conditions. The dryer should be inspected and the fault resolved before resuming regular use.
How much does it cost to repair error code 87 on a Whirlpool dryer?
Repair costs depend on which component has failed. If only a connector needs reseating, the repair may cost nothing beyond your time. Replacing the upper axial probe typically falls in the range of $20 to $80 for the part, while a new main control board can range from $100 to $300 or more. Adding professional labor costs generally brings the total repair to somewhere between $100 and $400 depending on the specific fault and your location.
Will resetting my Whirlpool dryer clear error code 87?
Resetting the dryer by unplugging it for a few minutes may temporarily clear the error code display, but it will not fix the underlying hardware fault. If the upper axial probe, its wiring, or the control board has an actual defect, the code will return once the dryer resumes operation. A proper repair requires identifying and correcting the failed component rather than relying on a reset.

Related Whirlpool dryer codes

All Whirlpool dryer codes
View all 210 Whirlpool dryer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass