Goodman furnace code E0: Ignition Lockout
Try DIY first, then call a pro
What does E0 mean on a Goodman furnace display? Three failed ignition cycles — the control can't establish measurable combustion and locks out. Same reset as flash models: thermostat OFF 5–20 s, or kill power ≥5 s.
This condition involves the gas or combustion side. If you smell gas or a CO alarm sounds: leave, then call your gas utility. Diagnostic info here is reference — combustion repairs are for licensed technicians. All six emergency signs →
GOOD NEWS: THE FIRST CHECKS ARE FREE AND TAKE MINUTES.
Try these first — in this order
Clean the flame sensor first; watch whether the igniter glows during the ignition attempt.
Repeated lockouts after cleaning = gas pressure or valve diagnosis. DIY part cost: $8–15 / $15–35 — a pro visit for this class of fault typically runs $150–350.
What causes it (in order of likelihood)
- Dirty flame sensor DIY-CHECKABLE
- Bad igniter or gas-supply issue 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 E0 mean on a Goodman furnace display?
Three failed ignition cycles — the control can't establish measurable combustion and locks out. Same reset as flash models: thermostat OFF 5–20 s, or kill power ≥5 s.
How do I fix Goodman furnace code E0?
You can note whether it recurs and when. Flame sensor, igniter, and gas-supply checks are technician work. Avoid repeated resets, and if you smell gas, leave and call the utility from outside.
How much does it cost to fix Goodman furnace code E0?
Cost depends on what stopped ignition. A dirty flame sensor, an igniter fault, and a gas-supply problem are different repairs, so the price isn't known until a technician diagnoses it.
Related symptoms
These symptoms can appear alongside this code. The link is an association, not a diagnosis, and code meanings vary by brand, model and control.
Applies to
GMVC96 · GCVC96
Different Goodman generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Same control platform, same code: Amana furnace code E0
Verified against Goodman GMVC96/GCVC96 Service Manual, p.44
Last verified 2026-07-06 · page updated 2026-10-07 · how we verify
Other Goodman furnace codes
These links include other Goodman model families. Code meanings can change by model and control board, so confirm your model and service manual before using a definition.