🔥Furnace

E05

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

York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace E05 Error Fix: High Limit Switch Open

The high limit switch detected excessive temperature and opened to shut down the furnace, preventing overheating. Causes may include airflow restriction, dirty filter, or faulty switch.

High severity2 fixes available

Quick Answer

Error E05 on the York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace means: High Limit Switch Open. The top-ranked community fix is “Replace High Limit Switch” (medium difficulty, ~40 min, DIY cost: $40-$70). 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:

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: $150-$220.

Other York Models with Error E05

DERA-P036N07 HP 16 SEER

heat_pump · 2 fixes

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

furnace · 2 fixes

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

furnace · 2 fixes

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

air_conditioner · 2 fixes

Other York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace Error Codes

Ignition Failure

Flame Sensor Fault

Pressure Switch Error

2 fixes

E04

Inducer Motor Failure

Blower Motor Fault

Limit Circuit Open

Indoor Air Sensor Fault

2 fixes

E09

Control Board Communication Error

2 fixes

People Also Ask About York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace Error E05

What does error code E05 mean on a York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace?

Error code E05 on the York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace means: High Limit Switch Open. The high limit switch detected excessive temperature and opened to shut down the furnace, preventing overheating. Causes may include airflow restriction, dirty filter, or faulty switch.

How do I fix error code E05 on my York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace?

The most successful fix is "Replace High Limit Switch" (medium difficulty, ~40 minutes). Estimated DIY cost: $40-$70. HomeMD has 2 community-ranked fixes for this error.

Is error code E05 on a York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed 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 TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace error E05 myself?

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

How much does it cost to repair York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace error E05?

DIY cost: $40-$70. Professional repair typically costs $150-$220. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace have?

The York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace has 8 other known error codes, including: E01 (Ignition Failure), E02 (Flame Sensor Fault), E03 (Pressure Switch Error), E04 (Inducer Motor Failure), E06 (Blower Motor Fault), and 3 more.

Which other York models have the E05 error?

Error code E05 also appears on 4 other York models: DERA-P036N07 HP 16 SEER, GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace, TM8E100C20MP11 100,000 BTU 80% AFUE Single-Stage Upflow 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 TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace have?

The York TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace has 8 other known error codes:

E01 — Ignition Failure (2 fixes)
E02 — Flame Sensor Fault (2 fixes)
E03 — Pressure Switch Error (2 fixes)
E04 — Inducer Motor Failure (2 fixes)
E06 — Blower Motor Fault (2 fixes)
E07 — Limit Circuit Open (2 fixes)
E08 — Indoor Air Sensor Fault (2 fixes)
E09 — Control Board Communication Error (2 fixes)

Which other York models have the E05 error?

Error code E05 also appears on 4 other York models:

DERA-P036N07 HP 16 SEER (heat pump) · 2 fixes
GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace (furnace) · 2 fixes
TM8E100C20MP11 100,000 BTU 80% AFUE Single-Stage Upflow 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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