York Furnace Error Codes
Complete list of York furnace error codes with causes and how to fix them.
1
🟡
York Furnace error code 1: Normal operation.
Technician Required
11
🔴
York Furnace error code 11: Flame sensed without call for heat.
Technician Required
12
🟡
York Furnace error code 12: Blower fault — low CFM.
Technician Required
13
🟢
York Furnace error code 13: Limit switch lockout.
✓ DIY Possible
14
🔴
York Furnace error code 14: Ignition lockout — 3 strikes.
Technician Required
2
🟢
York Furnace error code 2: High-pressure lockout.
✓ DIY Possible
3
🟢
York Furnace error code 3: Low-pressure lockout.
✓ DIY Possible
31
🟡
York Furnace error code 31: Pressure switch stuck closed.
Technician Required
32
🟡
York Furnace error code 32: Pressure switch stuck open.
Technician Required
33
🟡
York Furnace error code 33: Draft pressure switch failure.
Technician Required
34
🔴
York Furnace error code 34: Igniter circuit failure.
Technician Required
4
🟢
York Furnace error code 4: High-discharge temperature lockout.
✓ DIY Possible
41
🟡
York Furnace error code 41: Blower motor fault.
Technician Required
42
🟡
York Furnace error code 42: Inducer motor fault.
Technician Required
43
🟡
York Furnace error code 43: Low inducer speed.
Technician Required
44
🔴
York Furnace error code 44: Secondary voltage fuse blown.
Technician Required
45
🟡
York Furnace error code 45: Control board failure.
Technician Required
46
🔴
York Furnace error code 46: Low line voltage.
Technician Required
47
🟢
York Furnace error code 47: Blower on after heating — door interlock.
✓ DIY Possible
5
🔴
York Furnace error code 5: Ignition failure lockout.
Technician Required
6
🔴
York Furnace error code 6: Rollout switch open.
Technician Required
7
🔴
York Furnace error code 7: Loss-of-flame lockout.
Technician Required
8
🟡
York Furnace error code 8: Inducer motor fault.
Technician Required
9
🟡
York Furnace error code 9: Limit switch — open or cycling.
Technician Required
E1
🔴
York Furnace error code E1: High pressure.
Technician Required
E2
🔴
York Furnace error code E2: Low pressure.
Technician Required
E3
🟡
York Furnace error code E3: Discharge temp high.
Technician Required
E4
🟢
York Furnace error code E4: Ambient sensor failure.
✓ DIY Possible
E5
🟢
York Furnace error code E5: Discharge sensor failure.
✓ DIY Possible
E6
🟢
York Furnace error code E6: Suction sensor failure.
✓ DIY Possible