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Goodman gas furnace code EE6: Weak flame signal
Gas furnace, Canada and United States
The furnace keeps running normally, but the flame sensor microamp signal is low.
This needs a licensed gas technician. There is nothing safe to check yourself. Leave the covers on and book a professional.
This involves the gas supply or burner. Only a licensed technician should open the unit or work on gas parts.
What causes it
-
The flame sensor is coated or oxidised. A qualified servicer cleans it; this is not an owner job.
-
The flame sensor is not positioned correctly in the burner flame.
-
Lazy burner flames from wrong gas pressure or poor combustion air.
How to read this code on your unit
The code shows on the three-character display on the furnace control board, which you can see through the sight glass on the blower compartment. IdL means the furnace is idle and normal. A blank display means the board has no power or has failed.
Booking a licensed gas technician
Book a licensed gas technicianlicensed gas technician
- Turn the unit off and leave the covers on. Gas components must only be serviced by a licensed technician.
- Note the code, how often it appears, and the model and serial numbers from the rating label.
- Book a licensed gas technician and give them those details.
Models that show this code
285 models in 17 ranges
| Range | Models |
|---|---|
| GM9C80 / GC9C80 / AM9C80 | GM9C800403AN, GM9C800403AX, GM9C800603AN, GM9C800603AX, GM9C800603BN, GM9C800603BX, GM9C800803BN, GM9C800803BX, GM9C800804BN, GM9C800804BX, GM9C800804CN, GM9C800804CX, GM9C800805CN, GM9C800805CX, GM9C800805DX, GM9C801004CN, GM9C801005CN, GM9C801005CX, GM9C801205DN |
| GM9C96 / GC9C96 / AM9C96 | GM9C960303AN, GM9C960403AN, GM9C960603AN, GM9C960603BN, GM9C960803BN, GM9C960804CN, GM9C961004CN, GM9C961005CN, GM9C961205DN, GC9C960403BN, GC9C960603BN, GC9C960803BN, GC9C961005CN |
| GM9S80 / GC9S80 / AM9S80 / AC9S80 | GM9S800403AN, GM9S800403AX, GM9S800603AN, GM9S800603AX, GM9S800603BN, GM9S800603BX, GM9S800604BN, GM9S800604BX, GM9S800803BN, GM9S800803BX, GM9S800804BN, GM9S800804BX, GM9S800804CN, GM9S800804CX, GM9S800805CN, GM9S800805CX, GM9S801005CN, GM9S801005CX, GM9S801205DN, AM9S800403AX, AM9S800603AX, AM9S800603BN, AM9S800604BX, AM9S800803BX, AM9S800804BX, AM9S800804CX, AM9S800805CX, AM9S801005CX, AM9S801205DX |
| GM9S92 | |
| GM9S96 / GC9S96 / AM9S96 / AC9S96 | GM9S960403AN, GM9S960603BN, GM9S960803BN, GM9S960804CN, GM9S960805CN, GM9S961005CN, GM9S961205DN, GC9S960403BN, GC9S960603BN, GC9S960804CN, GC9S961005CN, GC9S961205DN, AM9S960403AN, AM9S960603BN, AM9S960803BN, AM9S960804CN, AM9S960805CN, AM9S961005CN, AM9S961205DN |
| GR9S80 / GD9S80 / AR9S80 | GR9S800403AN, GR9S800403AX, GR9S800603AN, GR9S800603AX, GR9S800603BN, GR9S800603BX, GR9S800604BN, GR9S800604BX, GR9S800803BN, GR9S800803BX, GR9S800804BN, GR9S800804BX, GR9S800804CN, GR9S800804CX, GR9S800805CN, GR9S800805CX, GR9S801005CN, GR9S801005CX, GR9S801205DN, GD9S800403AN, GD9S800403AX, GD9S800603AN, GD9S800603AX, GD9S800804BN, GD9S800804BX, GD9S800805CX, GD9S801005CN, GD9S801005CX |
| GR9S92 / AR9S92 | GR9S920403AN, GR9S920603BN, GR9S920803BN, GR9S920804CN, GR9S920805CN, GR9S921004CN, GR9S921005CN, GR9S921205DN |
| GR9S96 / GD9S96 / AR9S96 | GR9S960403AN, GR9S960603BN, GR9S960803BN, GR9S960804CN, GR9S960805CN, GR9S961005CN, GR9S961205DN, GD9S960403BN, GD9S960603BN, GD9S960804CN, GD9S961005CN, GD9S961205DN, AR9S960403AN, AR9S960603BN, AR9S960803BN, AR9S960804CN, AR9S960805CN, AR9S961005CN, AR9S961205DN |
| GR9T80 / GD9T80 | GR9T800403AN, GR9T800403AX, GR9T800603AN, GR9T800603AX, GR9T800603BN, GR9T800603BX, GR9T800803BN, GR9T800803BX, GR9T800804BN, GR9T800804BX, GR9T800804CN, GR9T800804CX, GR9T800805CN, GR9T800805CX, GR9T800805DX, GR9T801004CN, GR9T801005CN, GR9T801005CX, GR9T801205DN, GD9T800403AX, GD9T800603AX, GD9T800603BX, GD9T800804BX, GD9T800805CX, GD9T801005CX |
| GR9T96 / GD9T96 | GR9T960303AN, GR9T960403AN, GR9T960603AN, GR9T960603BN, GR9T960803BN, GR9T960804CN, GR9T961004CN, GR9T961005CN, GR9T961205DN |
| GMVC8 / GCVC8 / AMVC8 / ACVC8 | GMVC80603BN, GMVC80603BX, GMVC80604BN, GMVC80604BX, GMVC80803BN, GMVC80803BX, GMVC80804CN, GMVC80804CX, GMVC80805CN, GMVC80805CX, GMVC80805DN, GMVC80805DX, GMVC81005CN, GMVC81005CX, AMVC80603BN, AMVC80603BX, AMVC80604BN, AMVC80604BX, AMVC80803BN, AMVC80803BX, AMVC80804CN, AMVC80804CX, AMVC80805CN, AMVC80805CX, AMVC80805DN, AMVC80805DX, AMVC81005CN, AMVC81005CX |
| GMVC80 / GCVC80 / AMVC80 / ACVC80 | GMVC800603BN, GMVC800603BX, GMVC800604BN, GMVC800604BX, GMVC800803BN, GMVC800804CN, GMVC800804CX, GMVC800805CN, GMVC800805CX, GMVC800805DN, GMVC800805DX, GMVC801005CN, GMVC801005CX, AMVC800603BN, AMVC800603BX, AMVC800604BN, AMVC800604BX, AMVC800803BN, AMVC800804CN, AMVC800804CX, AMVC800805CN, AMVC800805CX, AMVC800805DN, AMVC801005CN, AMVC801005CX |
| GMVC96 / GCVC96 / AMVC96 / ACVC96 | GMVC960403BN, GMVC960603BN, GMVC960803BN, GMVC960804CN, GMVC961005CN, GMVC961005DN, GMVC961205DN, GCVC960403BN, GCVC960603BN, GCVC960804CN, GCVC961005CN, GCVC961205DN, AMVC960403BN, AMVC960603BN, AMVC960803BN, AMVC960804CN, AMVC961005CN, AMVC961005DN, AMVC961205DN, ACVC960403BN, ACVC960603BN, ACVC960804CN, ACVC961005CN, ACVC961205DN |
| GMVM97 / GCVM97 / AMVM97 / ACVM97 | GMVM970603BN, GMVM970803BN, GMVM970804CN, GMVM971005CN, GMVM971205DN, AMVM970603BN, AMVM970803BN, AMVM970804CN, AMVM971005CN, AMVM971205DN |
| GRVM97 / GDVM97 | GRVM970603BN, GRVM970803BN, GRVM970804CN, GRVM971005CN, GRVM971205DN |
| GRVT80 / GDVT80 | GRVT800603BN, GRVT800603BX, GRVT800604BN, GRVT800604BX, GRVT800803BN, GRVT800804CN, GRVT800804CX, GRVT800805CN, GRVT800805CX, GRVT800805DN, GRVT800805DX, GRVT801005CN, GRVT801005CX, GDVT800603BX, GDVT800803BX, GDVT800805CX, GDVT801005CX |
| GRVT96 / GDVT96 | GRVT960403BN, GRVT960603BN, GRVT960803BN, GRVT960804CN, GRVT961005CN, GRVT961005DN, GRVT961205DN |
Where this comes from
- GM9S80/GC9S80 gas furnace installation instructions (IOG-2030B) , page 29
- GR9S92/GR9S96/GD9S96 gas furnace installation instructions (IOG-2037C) , page 44
- GMVC96/GCVC96 (revisions BA to BC) gas furnace installation instructions (IOG-2015L) , page 48
- GRVT80/GDVT80 gas furnace installation instructions (IOG-2043B) , page 35
Checked against the manufacturer's manual on 13 October 2026.
Other Goodman gas furnace codes
| Code | Meaning | What you can do |
|---|---|---|
| E6 | Weak flame signal | Call a pro |
| EE2 | Pressure switch not closing | Call a pro |
| EE3 | Primary limit switch open | Safe checks first, then a pro |
| EE4 | Flame sensed with no call for heat | Safe checks first, then a pro |
| EE5 | Open fuse on the control board | Call a pro |
| EE7 | Igniter circuit problem | Call a pro |
| EE8 | High-stage pressure switch closed at start of heating | Call a pro |
| EE9 | High-stage pressure switch not closing | Call a pro |
| EEA | Reversed polarity or poor ground | Call a pro |
| amber light flashing rapidly | Weak flame signal | Call a pro |
| 7 red flashes | Flame loss or ignition failure (depends on model) | Depends on your model |
| 8 red flashes | Ignition failure or flame loss (depends on model) | Depends on your model |
See all flame loss codes on gas furnaces across brands.