Goodman GMVM97 furnace code E1: Low-Stage Pressure Switch Stuck Closed
Professional repair
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.
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
Wiring inspection only.
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
Always match parts against your model's parts list — part numbers vary within a series.
Questions about this code
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.
How do I fix Goodman GMVM97 furnace code E1?
There's no safe homeowner adjustment, and the switch must never be bypassed. A technician should diagnose the switch and its wiring.
How much does it cost to fix Goodman GMVM97 furnace code E1?
Cost depends on whether the low-stage switch or shorted wiring is responsible. Parts availability and labor for this modulating furnace also play a role.
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.63/68
Last verified 2026-07-06 · page updated 2026-10-03 · 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.