KitchenAid Dryer Error Codes: Complete 2026 Guide

E-Codes vs. F-Codes: Which Generation Is Your KitchenAid Dryer?

KitchenAid is a premium brand under Whirlpool Corporation, and its dryers share the same electronic platforms as Whirlpool-branded models. This means two distinct code generations exist in the installed base, and most online guides conflate them — producing wrong diagnostic paths for a significant share of machines.

E-code era (older models, roughly pre-2012): Machines in the KEYS (electric) and KGYS (gas) lineage display single-character fault codes: E1, E2, E3, E4, and PF. These machines have simpler digital displays — typically a single seven-segment digit — and a more limited sensor set. The thermistor-based codes (E1/E2) are the most frequent.

F-code era (newer models, 2012+): KitchenAid's current dryer platforms — KHED, YKHM, KHDS, and the current stacked/side-by-side configurations — use the two-to-three character F-code system: AF, F01, F22, F23, F26, F28, F29, F30, F31, L2. These codes align exactly with Whirlpool Duet dryer codes and share the same diagnostic procedures and service tech sheets.

If you're unsure which generation you have, look at your display: a single letter-number (E1) = older era; two-plus characters (F22, AF) = newer era. You can also confirm the model year from the manufacturing date encoded in your serial number — use the KitchenAid serial number decoder to read it in under a minute.

Which KitchenAid Dryer Models Use Which Codes

The model prefix tells you the platform:

• KEYS / KGYS (electric/gas, older): E-code system. Typically produced through 2010–2013. Drum capacity 6.0–7.0 cu. ft. The exhaust thermistor is the most common failure component.
• KHED (electric, hybrid heat pump): F-code system. KitchenAid's heat-pump dryer line introduced ~2016. Uses a refrigerant-based heat exchange cycle rather than a heating element — F22 and F30 codes behave somewhat differently on this platform (see thermistor section below).
• YKHM / YKHMS (electric, steam): F-code system. KitchenAid's steam-enabled electric dryer. Adds a steam nozzle and water inlet valve; error codes include both standard F-codes and steam-specific variants not present on non-steam models.
• KHDS (stacked laundry): F-code system. Gas and electric configurations. The dryer shares control architecture with the matching KitchenAid washer in a stacked pair.

Reset Procedure — Do This Before Any Diagnosis

KitchenAid control boards, like all Whirlpool-platform boards, can generate transient fault codes from power-line noise, brief supply fluctuations, or momentary communication dropouts between the main board and sensors. A proper power-cycle reset clears these without any part replacement.

1. Press the Power button (or Off/Pause) to end the active cycle.
2. If a PF (Power Failure) code is showing: press and hold Start to resume the interrupted cycle, or press Off/Pause to clear and start fresh. PF codes do not require a power cycle.
3. For all other codes: unplug the dryer from the wall outlet. Wait a full 5 minutes — this completely discharges the control board capacitors and resets all firmware state. A 30-second unplug is often insufficient.
4. Plug back in and run a short Timed Dry cycle (20–30 minutes at high heat) to test.
5. If the same code returns during or immediately after start, a physical component has failed. Proceed to the relevant section below.

Entering KitchenAid Dryer Diagnostic Mode

Diagnostic mode lets you read stored fault codes without waiting for the failure to reproduce. It also lets you manually activate outputs (heating element, motor, sensors) to isolate the failed component before ordering parts.

Newer F-code models (KHED, YKHM, KHDS):

1. Power the dryer on but do not start a cycle.
2. Within 5 seconds: press More Time three times, then Less Time three times. (Button labels vary by model year — the exact sequence is printed on the service tech sheet folded inside the lower toe panel.)
3. All indicator lights will flash once to confirm diagnostic mode entry.
4. Press Start to display the most recent stored fault code. Press Start again to scroll to earlier codes.
5. To exit, press Power or open the door.

Older E-code models (KEYS/KGYS): These machines do not have a consumer-facing diagnostic mode. The single fault code shown on the display is the live-detected fault.

The service tech sheet for your specific model documents the complete diagnostic test sequence, what each output activation tests, and the acceptable sensor readings. It is folded and tucked inside the lower front panel behind the lint screen door on most KitchenAid dryers.

AF / F30 / "Check Vent" — Restricted Airflow

This is the most common KitchenAid dryer code, and the most safety-critical. The dryer's exhaust-temperature monitoring detected airflow restriction — the exhaust duct is not moving air at the designed flow rate. The dryer continues to run when this code is active, but heating efficiency drops and thermal stress on internal components increases.

A blocked dryer vent is a fire hazard. The U.S. Fire Administration estimates approximately 2,900 home dryer fires per year are caused by failure to clean dryers and dryer venting — lint accumulation is the leading cause. Do not defer this repair.

Step-by-step diagnosis (most to least common cause):

1. Clean the lint screen. It should be cleaned before every load. A screen with accumulated lint blocks 20–40% of airflow even when it looks "passable." Rinse it monthly with warm water to clear the detergent-residue film that clogs mesh pores invisibly.
2. Inspect the full vent run. Disconnect the flexible transition hose at the back of the dryer and at the wall. The recommended vent material is rigid metal — avoid white plastic accordion duct, which collapses and accumulates lint far faster than rigid runs. Check for kinks, crushing, or excess length (maximum 25 feet equivalent for most KitchenAid dryers; subtract 5 feet per 90° elbow).
3. Clear the exterior wall cap. Go outside and confirm the vent hood opens freely when the dryer runs. Bird nests, pest screens, and lint buildup at the hood are common blockage sites that go undetected for years.
4. Professional duct cleaning. If the vent run is long or inaccessible, a duct cleaning brush kit ($15–$30 at any hardware store) or a professional dryer vent cleaning service ($80–$150) will clear accumulated lint from the full run.

After clearing the blockage, run a full high-heat cycle and monitor: if AF/F30 does not return, the issue is resolved. If the code returns immediately after a freshly cleaned vent, the exhaust thermistor that triggers the alert may itself have drifted out of calibration and require replacement (see F22/E1 section below).

F22 / F23 / E1 / E2 — Thermistor (Temperature Sensor) Codes

The exhaust thermistor is a negative-temperature-coefficient (NTC) resistor that changes resistance as exhaust temperature rises. The dryer's control board reads this resistance continuously to regulate heat and detect unsafe conditions. When the circuit is open or shorted, the board cannot confirm safe temperatures and stops heating.

F22 / E1 — Open thermistor circuit. The thermistor reads over 50,000 ohms at room temperature. The normal value is approximately 11,900 ohms at 70°F (11.9kΩ). A reading above 50kΩ means the thermistor has an internal break — the resistance-temperature relationship has failed. The dryer will run (drum turns) but the heating element or gas valve will not activate.

F23 / E2 — Shorted thermistor circuit. The thermistor reads below 500 ohms. A shorted thermistor tells the board the exhaust is extremely hot even when the dryer is cold — the board correctly refuses to add more heat.

How to test the thermistor with a multimeter:

1. Unplug the dryer. Remove the lower back panel (4–6 screws on most KitchenAid models) to access the exhaust duct housing.
2. Locate the thermistor — a small two-wire sensor mounted on the exhaust duct, typically held by one 1/4-inch hex screw.
3. Disconnect the wire harness and set your multimeter to the ohms (resistance) setting.
4. Touch the probes to the thermistor terminals. At room temperature (65–75°F), a good thermistor reads 9,000–14,000 ohms. Anything above 50,000 ohms (E1/F22) or below 500 ohms (E2/F23) = replace it.

The thermistor is one of the easiest KitchenAid dryer repairs: typically a $15–$30 OEM part held by one screw and a two-wire connector. Repair time is 15–20 minutes for anyone comfortable removing a back panel.

Before ordering the part: also check the thermal fuse (a separate one-shot safety device, usually $5–$12, mounted nearby on the exhaust housing). If the vent was clogged and the dryer overheated, the thermal fuse may have opened as well. A blown thermal fuse reads as an open circuit on a multimeter (infinite resistance). Always replace the thermal fuse alongside the thermistor if the vent restriction was the root cause — the fuse blows at ~309°F and will not reset on its own.

On KHED heat-pump models: The thermistor arrangement is more complex because the heat-pump system uses multiple temperature sensors across the refrigerant circuit, the condenser, and the evaporator. F22 on a heat-pump dryer is more likely to indicate a system-level issue rather than a single thermistor swap. Consult the KHED-specific service tech sheet before ordering parts.

F01 — Main Electronic Control Board Failure

F01 indicates the main control board has detected an internal fault it cannot recover from. The board manages all dryer functions: motor relay, heating element or gas valve relay, sensor inputs, user interface, and diagnostic logging.

Before ordering a replacement board ($100–$280 for OEM KitchenAid):

1. Power-cycle first. Unplug for 5 full minutes. Many F01 codes on KitchenAid dryers are transient faults from power-line events — a brown-out, a brief over-voltage, or a static discharge. A proper power-cycle clears a significant fraction of F01 occurrences permanently.
2. Inspect the ribbon-cable connectors. With the power off, open the control panel (typically two Phillips screws at the top of the front panel or two tabs at the rear of the console). Locate the ribbon cables connecting the main board to the user interface board. Press each connector firmly until it clicks. A loose or partially seated ribbon cable mimics a dead board on F01.
3. Look for visible damage. Before committing to a board replacement, inspect the PCB for burnt resistors, swollen capacitors, or charred traces. If the board shows physical damage, replacement is confirmed. If the board looks clean, consider getting the board repaired by a PCB repair service (typically $40–$80) before spending $280 on a new one.

F28 / F29 — Moisture Sensor Failure

KitchenAid dryers (all F-code models) use a pair of stainless-steel sensor bars mounted inside the drum near the lint screen to detect remaining moisture in the load. The control board measures the electrical conductivity between the two bars — a wet load conducts electricity, a dry load does not, signaling the dryer to stop.

F28 — Moisture sensor open (no signal). The board receives no conductivity signal even when a wet load is present. Common causes: lint or fabric softener residue coating the sensor bars (most frequent), a broken wire in the harness from the drum to the board, or a failed sensor assembly.

F29 — Moisture sensor shorted (constant signal). The board sees a constant "wet" reading regardless of load moisture. Causes: a debris bridge between the two bars, a shorted wire, or a failed sensor.

Step 1 before replacing anything: Clean the moisture sensor bars. Open the dryer door. Locate the two narrow parallel metal strips on the inside of the drum, just below the lint screen opening. Use a soft cloth dampened with rubbing alcohol to wipe each bar thoroughly. Fabric softener dryer sheets leave a waxy film on the bars that insulates them from conductivity and triggers F28 even with a perfectly functional sensor. Many F28 codes are completely resolved by a 60-second cleaning.

If cleaning does not resolve F28 or F29, the sensor assembly or wiring harness needs replacement. The sensor bars are typically sold as a complete assembly ($20–$45) and require drum front-panel removal to access — a moderate DIY job taking 45–60 minutes.

F26 — Drive Motor System Failure

F26 means the motor failed to start or stopped unexpectedly during a cycle. The drive motor on KitchenAid dryers simultaneously turns the drum (via the drum belt) and powers the blower wheel that moves heated air through the drum.

Before condemning the motor ($60–$150):

• Check the drum belt first. A snapped belt is the most common cause of F26 — you can hear the motor running (a faint hum) but the drum does not turn. Open the dryer door: if the drum spins freely with a finger (too easily, no resistance) the belt has snapped. Drum belts are a $10–$25 part and replacing them is a beginner DIY job. The drum must be removed to access the belt, but no special tools are required.
• Check the door switch. A failed door switch can cut power to the motor relay on some KitchenAid models, causing F26. The switch is typically a $10–$20 part reachable without major disassembly.
• Test motor continuity. If the belt is intact and the drum won't turn, use a multimeter on the motor windings. A motor winding that reads open (infinite resistance) has failed thermally and needs replacement. Some motors fail with thermal cutout — a small bi-metal limiter in the motor body resets after cooling; if the dryer sat for an hour and works temporarily before failing again, the motor is overheating and near end of life.

L2 / F31 — Voltage Loss (Electric Dryers Only)

North American 240V electric dryers use two 120V legs (L1 and L2) that together produce 240V for the heating element. The motor and control board run on only 120V (one leg) — so if L2 is lost, the drum continues to turn and the display stays on, but the clothes tumble indefinitely without drying. This is one of the most misdiagnosed dryer symptoms: owners assume the heating element failed when the actual cause is a tripped breaker.

L2 or F31 appears when the control board detects the L2 leg at near-zero voltage.

Diagnosis:

1. Go to your main electrical panel. Find the circuit breaker for the dryer — it should be a double-pole 30A breaker (two breaker positions connected by a single handle). Both positions must be firmly in the ON position. A tripped breaker may appear "on" but actually sit slightly between ON and OFF — switch it all the way to OFF, then back to ON.
2. If the breaker is fine, check the dryer's terminal block (the connection point where the 3- or 4-wire power cord connects to the dryer). One of the terminal screws may be loose or the wire may have burned through. Unplug the dryer and inspect with the power off.
3. If breakers and terminal connections are good, use a multimeter at the wall outlet to confirm 240V across L1 and L2. A reading of ~120V (not ~240V) confirms the utility feed to your panel has an issue — contact your utility provider, not an appliance tech.

L2/F31 does not apply to gas dryers — gas models use only 120V for controls and the motor, with the gas valve providing heat independently. If a gas KitchenAid dryer is tumbling without heat and shows no error code, a failed gas igniter or gas valve solenoid is the most likely cause.

E3 / E4 — Blower and Drum Rotation (Older E-Code Models Only)

These codes appear only on older KEYS/KGYS models with the E-code system.

E3 — Blower rotation failure. The control detected that blower RPM dropped below approximately 500 RPM during a cycle. All outputs are shut off when E3 appears. On older KitchenAid dryers the blower wheel is mounted directly on the motor shaft — blower failures are almost always caused by a worn motor shaft sleeve that allows the blower to wobble, a lint-clogged blower housing that mechanically restricts rotation, or a failed motor. Access the blower by removing the front panel and drum.

E4 — Drum rotation failure. Drum speed dropped to 0 RPM during a cycle. Causes are the same as F26 on newer models: a broken drum belt (most common), a failed idler pulley, or a motor failure. The drum belt costs $10–$25 and should always be checked first before any electrical diagnosis.

Note: On some older KEYS models, E3 also appears in diagnostic test mode to indicate a user-interface or software mismatch (the code reuses the same digit across two meanings). If E3 appears only during a diagnostic test sequence — not during a normal drying cycle — it is reporting a control board/UI communication issue, not a blower hardware failure.

PF — Power Failure

PF is not a fault code — it is an informational status code indicating that normal AC power was interrupted while a drying cycle was in progress. The dryer displays PF when power is restored to remind you the load may still be damp.

• Press and hold Start to resume the interrupted cycle from where it paused.
• Press Off/Pause to clear the PF display and start a fresh cycle.

PF appears frequently in homes with older electrical panels, on utility circuits prone to brief brownouts, or when someone trips the dryer's circuit breaker and then resets it. If PF is occurring multiple times per week without obvious power interruptions, use a multimeter at the wall outlet to check for voltage fluctuations — intermittent low-voltage events that don't register as a full outage can still trigger PF.

Full KitchenAid Dryer Error Code Reference Table

DIY vs. Call a Technician

Check KitchenAid's 2-Year Warranty Before Paying for Anything

KitchenAid's standard limited warranty covers 2 full years of parts and labor from the original purchase date — double the 1-year coverage on standard Whirlpool-branded and most competing dryers. If your dryer is under 2 years old and a component failure generated an error code, that repair should cost you nothing under the warranty.

The warranty is measured from the purchase date, not the manufacture date. A dryer that sat in a retailer's warehouse for eight months before you bought it still carries a full 2-year warranty from the day of purchase. Keep your receipt — it is the documentation KitchenAid requires for warranty claims. If you bought the machine second-hand, the warranty does not transfer.

Always check for active CPSC recalls on your model before scheduling paid service. A recalled appliance may qualify for a free factory remedy regardless of warranty age. Use ApplianceIQ's recall check with your model number as the first step before any repair conversation.

To confirm whether your KitchenAid dryer is still within warranty, decode the manufacture date from the serial number using the KitchenAid serial number decoder — cross-reference the manufacture date against your purchase date to determine your exact warranty position.

Repair vs. Replace Math for KitchenAid Dryers

KitchenAid full-size dryers carry retail prices of $800–$1,600 depending on configuration. The standard 50% rule — replace when repair cost exceeds 50% of replacement value — sets a repair threshold of $400–$800, which is generous compared to entry-level brands. Most KitchenAid dryer repairs fall well within this range.

KitchenAid dryers typically last 12–15 years with maintenance and clean venting. Applied to the most common error codes:

• AF/F30 or thermistor on any age machine: Repair without hesitation. A $15–$30 thermistor or a vent cleaning on a machine worth $800–$1,600 is trivial. These repairs are also unrelated to overall machine longevity.
• Drum belt (E4/F26) on a unit under 12 years old: Repair. A $10–$25 belt on a $1,000+ machine is an obvious call. Drum belts are high-cycle wear parts — their failure is expected, not indicative of broader machine decline.
• Moisture sensor (F28/F29) on any age machine: Repair. At $20–$45, it is never financially rational to replace a dryer for a moisture sensor fault.
• F01 control board on a unit under 10 years old: Repair. At $100–$280 for the part plus $100–$200 labor (if using a technician), total cost is $200–$480 — still below the 50% threshold for a dryer worth $800+.
• F01 control board on a unit over 12 years old: Evaluate. If the machine is approaching the end of its expected lifespan and other components are also showing wear, a $200–$480 repair on an aging machine may be close to its remaining value.
• Drive motor on a unit over 12 years old: Borderline. At $60–$150 for the motor plus $150–$250 labor, total is $210–$400 — within the threshold but approaching it. Weigh the machine's overall condition and whether a second failure is likely soon.

For a structured decision framework, see the appliance repair-vs-replace decision tree and 2026 repair cost math guide. For KitchenAid's reliability track record versus other brands, see appliance lifespan by brand.

Before scheduling a service call or ordering parts, run your KitchenAid dryer's serial number through ApplianceIQ to get the verified manufacture date, warranty position, and active recall status in one lookup. Free tier includes 25 lookups/month — no credit card required.