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E09

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

York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace E09 Error Fix: Open Limit Circuit

The furnace detected an open circuit in the limit switch wiring, causing safety shutdown. This error indicates wiring damage or faulty limit switch components.

High severity2 fixes available
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Quick Answer

Error E09 on the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace means: Open Limit Circuit. The top-ranked community fix is “Replace Limit Switch Assembly” (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

Electrical Fault → Wiring Harness DamagedPrimary
Heating Element Failure → High Limit Thermostat Tripped

When to Call a Professional

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

  • This is a high severity error — continued use may cause damage or a safety hazard
  • 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 E09

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

E01

Ignition Failure

2 fixes
E02

Flame Sensor Fault

2 fixes
E03

Pressure Switch Open

2 fixes
E04

Limit 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

People Also Ask About York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace Error E09

What does error code E09 mean on a York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace?
Error code E09 on the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace means: Open Limit Circuit. The furnace detected an open circuit in the limit switch wiring, causing safety shutdown. This error indicates wiring damage or faulty limit switch components.
How do I fix error code E09 on my York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace?
The most successful fix is "Replace Limit Switch Assembly" (medium difficulty, ~40 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.
Is error code E09 on a York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace serious?
This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.
Can I fix York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace error E09 myself?
Yes — the top-ranked community fix ("Replace Limit Switch Assembly") 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 E09?
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), E04 (Limit Switch Open), E05 (Inducer Motor Failure), and 3 more.
Which other York models have the E09 error?
Error code E09 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:

Which other York models have the E09 error?

Error code E09 also appears on 4 other York models:

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