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Goodman E6 Error Code: Weak flame sense signal

Updated October 2026 · Sourced from Goodman documentation

🛑 Turn it off and call a licensed pro

The flame sense micro amp signal is low. The furnace may still run normally, but the manual lists a coated or oxidized flame sensor, a sensor out of position or a lazy flame from improper gas pressure or combustion air.

Is it safe to keep running? No. Turn it off and get it checked. Book a service visit. Cleaning the flame sensor and checking gas pressure and venting should be done by a licensed technician.

E6 at a glance

Code / how it showsMeaningApplies to
E6
Also: EE6
Three-digit 7-segment display shows EE6
Weak flame sense signalGoodman GMVC96 / Amana AMVC96 / GCVC96 / ACVC96 34.5-inch chassis two-stage gas furnaces

Check this first

Only steps a homeowner can do safely. Do not open electrical panels or the burner area.

  1. Turn the furnace power off at the switch or breaker, wait one minute, then turn it back on to see whether the code returns.
  2. Look outside at the furnace vent and intake pipe ends. Make sure snow, leaves or a nest are not blocking them. Look only, do not touch the pipes.

🛑 Stop and call a licensed pro if

  • Book a service visit. Cleaning the flame sensor and checking gas pressure and venting should be done by a licensed technician.
  • You smell gas. Leave the house, do not touch switches, and call your gas utility from outside.
  • Flame rollout, limit or pressure switch codes that come back after one reset.
  • Anything involving the control board, gas valve, flame sensor, igniter or venting.
  • A carbon monoxide alarm sounds. Get everyone outside and call 911 or the fire department.

Safe first steps for any Goodman code

  1. Count the LED flashes through the blower door window before you switch anything off. Cutting power can clear the code.
  2. Replace or clean the furnace air filter.
  3. Check the thermostat: correct mode, set above room temperature, and fresh batteries.
  4. Make sure the furnace power switch and breaker are on. If the furnace has locked out, turning the power off and back on once restarts it.
  5. Make sure the gas valve is in the ON position, following the lighting instructions on the furnace label only.
  6. On high-efficiency furnaces, look at the outside vent and intake pipes for snow, ice, leaves or nests (look only, do not take pipes apart).

Source: Goodman 34.5 in. Chassis ACVC96/AMVC96/GCVC96/GMVC96 Service and Troubleshooting RS6612023R2, p.42 (table) and p.51 (flowchart). Codes are series-specific, so your unit's own manual is the final word. Reviewed October 2026.

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Related Goodman codes

E0 : Lockout after three failed ignition attemptsE1 : Low-stage pressure switch closed at start of heatingE2 : Low-stage pressure switch circuit openE3 : Primary limit circuit open (furnace overheating)E4 : Flame sensed with no call for heatE5 : Open fuse on the controlE7 : Problem with igniter circuitE8 : High-stage pressure switch closed at start of heatingE9 : High-stage pressure switch circuit openEA : Reversed 115 volt polarityEb : External gas valve error (valve not energized)EC : Internal gas valve error (valve energized when it should not be)

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