What does Goodman code 2 Flash mean?
Goodman furnace code 2 Flash means the pressure switch was stuck closed when it should have been open on the supported control family. Confirm the model number and diagnostic chart inside the furnace door before replacing parts.
What causes Goodman code 2 Flash?
- A pressure switch stuck closed
- A pinched or incorrectly connected pressure hose
- Shorted pressure-switch wiring or a control fault
Can I troubleshoot Goodman code 2 Flash?
- Turn furnace power off for five minutes and do not bypass or jumper the pressure switch.
- Check only the outdoor vent openings for obvious snow, ice, leaves, or nests before restoring power once.
How much does Goodman code 2 Flash cost to fix?
A pressure switch replacement typically costs between $175 and $650 nationally.
When should I call a technician?
Call a technician if the code returns; the switch, hose, wiring, and inducer draft need testing.
Sources and model scope
Fault codes vary by model and control board. Confirm the diagnostic chart inside your furnace panel or the official manual before acting.
Scope used here: DM80HS-style integrated controls using the documented 1–8 flash chart.
- Daikin Comfort Technologies: DM80HS Single-Stage Multi-Speed Gas Furnace — Product Specifications
SS-DM80HS · The 1–8 flash integrated-control family documented for DM80HS-series furnaces; sister-brand models must use the same control chart.
Compiled by Warmlo Editorial · Reviewed August 2026
This is general information, not professional advice. Gas, electrical, and combustion repairs can be dangerous — when in doubt, call a licensed technician.