- Home
- Goodman
- gas furnaces
- Code E1A
Goodman gas furnace code E1A: Onboard return air sensor shorted
Gas furnace, Canada and United States
The return air temperature sensor on the control board is shorted, so its reading is missing from the CoolCloud app.
This needs a licensed gas technician. There is nothing safe to check yourself. Leave the covers on and book a professional.
Only some models show this code. Check the list below.
What causes it
-
Something on the control board is shorting the sensor. A technician checks the board and replaces it if needed.
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
88 models in 6 ranges
| Range | Models |
|---|---|
| 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
- GMVC96/GCVC96 (revisions BA to BC) gas furnace installation instructions (IOG-2015L) , page 47
- GRVT80/GDVT80 gas furnace installation instructions (IOG-2043B) , page 36
Checked against the manufacturer's manual on 13 October 2026.
Other Goodman gas furnace codes
| Code | Meaning | What you can do |
|---|---|---|
| d0 | No shared data loaded on the control board | Call a pro |
| d4 | Invalid memory card data | Call a pro |
| E0 | Lockout after three failed ignition attempts | Safe checks first, then a pro |
| E1 | Low-stage pressure switch closed at start of heating | Call a pro |
| E2 | Low-stage pressure switch not closing | Safe checks first, then a pro |
| E3 | Overheat (depends on model) | Safe checks first, then a pro |
| E4 | Flame sensed with no call for heat | Safe checks first, then a pro |
| E15 | External return air sensor circuit open | Call a pro |
| E16 | External return air sensor circuit shorted | Call a pro |
| E17 | Supply air sensor circuit open | Call a pro |
| E18 | Supply air sensor circuit shorted | Call a pro |
| E19 | Onboard return air sensor unplugged | Call a pro |
See all temperature sensor fault codes on gas furnaces across brands.