Goodman Furnace 2 (red LED) error code
The control board's pressure-sensing input reads pressure at a moment when there should be none — the pressure sensor is stuck in the closed position or its wiring is shorted.
Also shown as: 2 red flashes, two red flashes, red LED flashing twice, fault code 2 red
Last updated: September 30, 2026
What causes the 2 (red LED) error?
- Pressure sensor contacts stuck closed
- Shorted or pinched sensor wiring
- Failed pressure sensor
How to fix Goodman 2 (red LED) — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Power-cycle once
Turn the furnace off at the service switch, wait 30 seconds, and turn it back on. If the code clears and heat works, the sensor may have stuck temporarily. - Check the sensor hoses
With power off, look at the small rubber hoses running to the pressure sensor for kinks, cracks, or trapped water, and straighten or drain them if needed. - Call a technician for testing
The sensor must be tested with a meter and replaced if it will not open. Wiring shorts also need professional repair.Safety warning: Do not bypass or jumper the pressure switch — it is a safety device that proves the venting system is working.
When to call a technician
- The code returns after a power cycle
- The sensor hoses look fine but the fault persists
Frequently asked questions
What does the pressure sensor do?
It proves the inducer fan is moving combustion air through the furnace and venting exhaust outside. If the control cannot trust that reading, it will not let the burners fire.
Can I just disconnect the sensor?
No. Bypassing a pressure switch defeats a critical safety check and can let the furnace run with blocked venting — a carbon monoxide risk.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.