E16
York · GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace
The flame detection circuit is open, indicating a wiring fault or sensor failure that prevents the furnace from confirming burner ignition. This stops the furnace from running to avoid unsafe operation.
Error E16 on the York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace means: Open Flame Detection Circuit. The top-ranked community fix is “Replace Flame Sensor Assembly” (medium difficulty, ~40 min, DIY cost: $40-$60). 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.
While many furnace repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $120-$180.
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The York GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace has 8 other known error codes:
Error code E16 also appears on 6 other York models:
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