mypros+
Error code reference

Kenmore Dryer Error Code Check Exhaust

The Check Exhaust feature has detected performance issues related to vent restriction or overloading of the…

Kenmore codesKenmore dryer codes

The Check Exhaust feature has detected performance issues related to vent restriction or overloading of the dryer drum.

First step from the service manual

Immediately inspect your venting system and make any repairs or perform any cleaning procedures necessary.

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

MyPros+ Max

Get the full diagnostic procedure for Check Exhaust.

  • 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 Check Exhaust means on a Kenmore dryer

The Check Exhaust alert on a Kenmore dryer is triggered by the dryer's built-in vent sensing system, which continuously monitors airflow conditions during a drying cycle. When the system detects that exhaust airflow has dropped below acceptable levels, it flags the condition to alert the user. The two primary triggers are a restricted venting system and an overloaded drum, both of which reduce the dryer's ability to expel hot, moisture-laden air efficiently.

A restricted vent is the most common cause and can result from lint accumulation inside the vent duct, a crushed or kinked flexible duct section, a clogged exterior vent cap, or an excessively long or convoluted vent run. Any of these conditions reduces the volume of air the dryer can move per minute, causing heat and humidity to build up inside the drum. Overloading the drum is the second trigger: when too many items are packed into the drum, airflow through the load is restricted in a similar way, preventing adequate moisture removal and triggering the same alert.

Addressing this alert promptly is important because sustained restricted airflow causes the dryer to run hotter than intended, which can shorten the life of heating components and, in more serious cases, create a fire hazard from accumulated lint. The first step after seeing this alert is to inspect the full length of the venting system, clean any lint buildup, check the exterior vent cap for blockages, and confirm the duct is not kinked or damaged. If the vent system checks out, reduce the load size and attempt another cycle.

Source: manufacturer service documentation.

Common causes of Check Exhaust

  1. 01

    Clogged or dirty vent duct

    Wiring / connection

    Lint accumulates inside the vent duct over time and eventually restricts airflow enough to trigger the alert. Disconnect the duct from the back of the dryer and inspect its full length for lint buildup, then clean it thoroughly before reconnecting.

  2. 02

    Blocked exterior vent cap

    Wiring / connection

    The vent cap on the outside of the home can become clogged with lint, bird nests, or debris, preventing exhaust air from escaping. Check the exterior cap to confirm the flap opens freely and the opening is unobstructed.

  3. 03

    Kinked or crushed flexible duct

    Part replacement

    Flexible foil or plastic duct can become pinched if the dryer is pushed too close to the wall, sharply bending the duct and cutting off airflow. Pull the dryer forward and inspect the duct for any kinks, then reposition the dryer to maintain a gradual duct bend.

  4. 04

    Overloaded drum

    Wiring / connection

    Packing too many items into the drum prevents air from circulating through the load and mimics the restricted airflow caused by a vent blockage. Reduce the load to no more than three-quarters of the drum capacity and restart the cycle.

  5. 05

    Excessively long or poorly routed vent run

    Part replacement

    A vent run that is too long, has too many elbows, or uses improper flexible ducting throughout its length can create chronic airflow restriction. Compare your installation against the dryer's venting requirements and reduce the number of elbows or total duct length if necessary.

See the test procedure for each cause

Frequently asked questions about Check Exhaust

What does Check Exhaust mean on a Kenmore dryer?
The Check Exhaust alert means the dryer's built-in airflow monitoring system has detected reduced exhaust performance during a cycle. This is typically caused by a lint clog somewhere in the venting system or by an overloaded drum restricting internal airflow. The dryer displays this alert to prevent overheating and to prompt you to restore proper ventilation before continuing to use the appliance.
How do I fix the Check Exhaust alert on my Kenmore dryer?
Start by inspecting the entire vent duct from the back of the dryer to the exterior vent cap, cleaning out any lint accumulation and straightening any kinked sections. Check that the exterior vent cap flap opens freely and is free of obstructions like lint or debris. If the venting system looks clear, try running a smaller load, as an overfilled drum can also trigger this alert. Once the underlying cause is corrected, the alert should clear on the next successful cycle.
Is the Check Exhaust alert on a Kenmore dryer a safety concern?
Yes, you should address it promptly. Restricted exhaust airflow causes heat to build up inside the dryer beyond normal operating temperatures, which can damage internal components over time. More importantly, lint accumulation in a restricted vent duct is a recognized fire hazard. Stopping use of the dryer until the vent is inspected and cleaned is the safest course of action.
How much does it cost to fix a Check Exhaust issue on a Kenmore dryer?
If the problem is only lint buildup in the duct, a DIY cleaning with a dryer vent brush kit typically costs between $15 and $40 in materials. Professional dryer vent cleaning services generally range from $80 to $175 depending on duct length and accessibility. If damaged or improperly sized ductwork needs to be replaced, parts and labor can range from $100 to $300 or more depending on the scope of the work.
Will resetting my Kenmore dryer clear the Check Exhaust alert?
Resetting the dryer may temporarily clear the display, but the alert will return if the underlying cause has not been corrected. The Check Exhaust feature actively monitors airflow during each cycle, so any remaining vent restriction or overloading will trigger it again. The alert should only be expected to stay clear after you have fully addressed the venting issue or reduced the load size.

Related Kenmore dryer codes

All Kenmore dryer codes
View all 105 Kenmore dryer codes

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

Get Started

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