🔥Furnace

E04

York · GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace

York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace E04 Error Fix: Limit Switch Open

The high limit switch has opened due to overheating or a malfunction, causing the furnace to shut down to protect against damage or fire risk. This error may be triggered by airflow restrictions or a faulty switch.

critical2 fixes available

Quick Answer

Error E04 on the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace means: Limit Switch Open. The top-ranked community fix is “Replace Limit Switch” (medium difficulty, ~40 min, DIY cost: $30-$50). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · furnace

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

Root Cause Analysis

Heating Element Failure → High Limit Thermostat TrippedPrimary

When to Call a Professional

While many furnace repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $130-$180.

Other York Models with Error E04

DERA-P036N07 HP 16 SEER

heat_pump · 2 fixes

TM8E100C20MP11 100,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace

furnace · 2 fixes

TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace

furnace · 2 fixes

YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor

air_conditioner · 2 fixes

Other York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace Error Codes

Ignition Failure

Flame Sensor Fault

Pressure Switch Open

Inducer Motor Failure

2 fixes

E06

Blower Motor Overcurrent

2 fixes

E07

Thermostat Communication Failure

2 fixes

E08

Flame Rollout Switch Open

2 fixes

E09

Open Limit Circuit

2 fixes

People Also Ask About York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace Error E04

What does error code E04 mean on a York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace?

Error code E04 on the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace means: Limit Switch Open. The high limit switch has opened due to overheating or a malfunction, causing the furnace to shut down to protect against damage or fire risk. This error may be triggered by airflow restrictions or a faulty switch.

How do I fix error code E04 on my York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace?

The most successful fix is "Replace Limit Switch" (medium difficulty, ~40 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.

Is error code E04 on a York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace serious?

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace error E04 myself?

Yes — the top-ranked community fix ("Replace Limit Switch") is rated medium difficulty and takes about 40 minutes. Tools needed: Phillips screwdriver, Multimeter.

How much does it cost to repair York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace error E04?

DIY cost: $30-$50. Professional repair typically costs $130-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace have?

The York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace has 8 other known error codes, including: E01 (Ignition Failure), E02 (Flame Sensor Fault), E03 (Pressure Switch Open), E05 (Inducer Motor Failure), E06 (Blower Motor Overcurrent), and 3 more.

Which other York models have the E04 error?

Error code E04 also appears on 4 other York models: DERA-P036N07 HP 16 SEER, TM8E100C20MP11 100,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace, TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace, YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace have?

The York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace has 8 other known error codes:

E01 — Ignition Failure (2 fixes)
E02 — Flame Sensor Fault (2 fixes)
E03 — Pressure Switch Open (2 fixes)
E05 — Inducer Motor Failure (2 fixes)
E06 — Blower Motor Overcurrent (2 fixes)
E07 — Thermostat Communication Failure (2 fixes)
E08 — Flame Rollout Switch Open (2 fixes)
E09 — Open Limit Circuit (2 fixes)

Which other York models have the E04 error?

Error code E04 also appears on 4 other York models:

DERA-P036N07 HP 16 SEER (heat pump) · 2 fixes
TM8E100C20MP11 100,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace (furnace) · 2 fixes
TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace (furnace) · 2 fixes
YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor (air conditioner) · 2 fixes

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