Goodman GMVM97 furnace code E6: Low Flame Signal
DIY-friendly fix
What does E6 mean on a Goodman GMVM97 furnace? Flame-sense microamps dropped below spec — the control has a built-in warning before lockouts begin. Official first cause: coated/oxidized flame sensor.
Before you touch anything: the six signs that mean stop troubleshooting and call a pro →
GOOD NEWS: THE FIRST CHECKS ARE FREE AND TAKE MINUTES.
Try these first — in this order
Clean or replace the sensor — 15 minutes, high success.
Persistent = gas-pressure adjustment. DIY part cost: $8–15 — a pro visit for this class of fault typically runs $150–350.
What causes it (in order of likelihood)
- Coated or oxidized flame sensor DIY-CHECKABLE
Parts referenced by this code
Always match parts against your model's parts list — part numbers vary within a series.
Questions about this code
What does E6 mean on a Goodman GMVM97 furnace?
Flame-sense microamps dropped below spec — the control has a built-in warning before lockouts begin. Official first cause: coated/oxidized flame sensor.
How do I fix Goodman GMVM97 furnace code E6?
Note whether heating continues normally. Sensor cleaning or replacement and gas-pressure checks involve the burner area, so schedule a technician.
How much does it cost to fix Goodman GMVM97 furnace code E6?
Cost depends on whether the sensor needs cleaning or replacing, or whether gas pressure needs adjustment. A technician can clarify after checking.
Applies to
GMVM97
Different Goodman generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Verified against Goodman GMVM97 Service Manual, p.61/64/68
Last verified 2026-07-06 · page updated 2026-10-03 · how we verify
Related Goodman furnace codes
These codes use the same modulating furnace (gmvm97) — dual 7-segment display system.