GOODMAN DIAGNOSTIC REFERENCE MODULATING FURNACE (GMVM97) — DUAL 7-SEGMENT DISPLAY DOC GOODMAN-GMVM97-E1

Goodman furnace: Low-Stage Pressure Switch Stuck Closed (E1)

Q: What does E1 mean on a Goodman GMVM97 furnace?

Low-Stage Pressure Switch Stuck Closed (E1). The low-stage pressure switch reads closed at the start of the heating cycle, before the inducer runs.

E1 YOUR LIGHT: DISPLAY CODE E1 — MATCH IT ABOVE

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What does E1 mean on a Goodman GMVM97 furnace? The low-stage pressure switch reads closed at the start of the heating cycle, before the inducer runs.

GOOD NEWS: THE FIRST CHECKS ARE FREE AND TAKE MINUTES.

Try these first — in this order

Wiring inspection only.

Still showing the code? See every cause ↓ Get repair quotes near you

Switch and circuit diagnosis. DIY part cost: $25–60 — a pro visit for this class of fault typically runs $150–350.

What causes it (in order of likelihood)

Faulty low-stage switch or shorted wiring TECH

Parts referenced by this code

Pressure Switch

$25–60 · Model-specific — match to your unit’s parts list

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Always match parts against your model's parts list — part numbers vary within a series.

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 GMVM97-Service, p.63/68

Last verified 2026-07-06 · how we verify