GOODMAN DIAGNOSTIC REFERENCE DUAL 7-SEGMENT DISPLAY (TWO-STAGE VARIABLE-SPEED) DOC GOODMAN-E8

Goodman furnace: High-Stage Pressure Switch Stuck Closed (E8)

Q: What does E8 mean on a Goodman furnace?

High-Stage Pressure Switch Stuck Closed (E8). The high-stage pressure switch is stuck closed when high stage is commanded — the furnace runs on LOW stage only regardless of thermostat demand.

E8 YOUR LIGHT: DISPLAY CODE E8 — MATCH IT ABOVE

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What does E8 mean on a Goodman furnace? The high-stage pressure switch is stuck closed when high stage is commanded — the furnace runs on LOW stage only regardless of thermostat demand.

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

Try these first — in this order

None safe — two-stage pressure circuit.

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

Two-stage switch diagnosis and replacement. DIY part cost: $25–60 — a pro visit for this class of fault typically runs $150–350.

What causes it (in order of likelihood)

Stuck high-stage pressure switch or 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

GMVC96 · GCVC96 · AMVC96 · ACVC96

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 GMVC96/GCVC96 Service Manual, p.44

Last verified 2026-07-06 · how we verify