On this Frigidaire dryer platform, E91 is recorded as Communication error between dryer electronic controls. Keep the complete model number with the code before treating it as a parts decision.
Written by
Daniel Reyes Appliance SpecialistPublished September 11, 2026
Content status:
Verified
Error codeE91
ApplianceDryer
Affected model seriesStandalone electronic dryer
Quick answer
E91 — Communication error between dryer electronic controls
Model compatibility: Frigidaire reuses codes across series and model years, so E91 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
E91 is a control-reported condition, not an automatic proof that one component has failed. Wiring, sensors, airflow, water, mechanical restrictions and the control itself can produce similar displays.
Communication error between dryer electronic controls. Platform note: Standalone electronic dryer. Confirm the exact model family before applying a service procedure from another Frigidaire generation.
Signs
Symptoms you may notice
The appliance may show this behavior: code returns after a restart or at the same point in a cycle.
The appliance may show this behavior: controls may become unresponsive, a cycle may stop, or the code may reappear immediately after startup.
The appliance may show this behavior: affected function may be disabled while other functions still operate.
The appliance may show this behavior: appliance may enter a protective state to prevent additional damage.
Why it happens
Possible causes
Diagnosis may need to consider temporary control reset condition — that possibility is not a confirmed failed part.
Diagnosis may need to consider loose inter-board harness — that possibility is not a confirmed failed part.
Diagnosis may need to consider low or unstable supply voltage — that possibility is not a confirmed failed part.
Diagnosis may need to consider failed user-interface/power/control board — that possibility is not a confirmed failed part.
Diagnosis may need to consider incorrect or incompatible replacement electronics — that possibility is not a confirmed failed part.
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Disconnect power for about 30–60 seconds, then restore it. Stay within normal owner access and stop if a safety warning appears.
Make sure the appliance is on a stable, correctly rated electrical supply. Stay within normal owner access and stop if a safety warning appears.
Do not reseat live control-board connectors. Stay within normal owner access and stop if a safety warning appears.
If the code immediately returns, document the model and code for service. Stay within normal owner access and stop if a safety warning appears.
Do not bypass door or lid locks, open sealed refrigeration systems, service microwave high-voltage sections, or dismantle internal gas or induction power modules.
Important safety warning. Stop using the appliance for smoke, arcing, a burning-electrical smell, repeated breaker trips, uncontrolled heating, or water reaching electrical parts.
Get help
When to call a technician
If E91 returns after the safe external checks, or the appliance shows a safety warning, professional diagnosis is appropriate. A technician should confirm the Frigidaire model and test the implicated system rather than replacing a part from the code description alone.
Seeing this code on your Frigidaire appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Communication error between dryer electronic controls That technical note still has to be confirmed against the exact model and control generation.
Record the code first. One controlled reset can be reasonable when there is no safety warning. Repeated resets are not a repair.
No. The code can point to a system while the failed item is wiring, a restriction, a sensor, or another connected component.
References
Sources & references
**Frigidaire Dryer 137518700 Technical Data Sheet** — manufacturer tech data sheet mirror https://manuals.plus/m/290619d911ab0ffda1654bcf4c124dcfef6398d6bcb92823695ee344a520bd3d This page paraphrases diagnostic information rather than reproducing service-manual text. Model-specific documentation takes precedence if it conflicts with a general guide.
Ready to get your Frigidaire appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
