Customer Says Outlet Is Dead But Breaker Is On: GFCI vs Loose vs Circuit Decision Tree

Why this matters

"The outlet is dead but the breaker isn't tripped" is one of the most common calls a handyman fields, and the customer's description is almost never the actual fault. The breaker looks fine to them because a GFCI trip, a back-stabbed connection failure, or a tripped breaker that only moved a few millimeters all look identical from the panel door. Misreading the call wastes a trip: you bring a new receptacle when the real problem is an upstream GFCI two rooms away, or you replace a device when a loose neutral has been arcing behind the box. Worse, a back-stab that has been heating up is a fire-risk you must find, not just restore. Translating the customer's words into a real circuit diagnosis up front lets you carry the right parts and quote honestly.

Symptom presentation

What the customer reports and what it usually maps to:

• "Dead but breaker's on" with other outlets in the bathroom, garage, kitchen, or exterior also dead: almost always a tripped GFCI feeding those receptacles downstream.
• "One outlet went dead, rest of the room works": isolated device or a loose connection at that box.
• "Half the outlet works, half is dead": a switched half (tab broken on purpose) or one set of terminals lost contact.
• "It worked, then crackled/smelled hot, then died": loose connection that arced open. Treat as a fire-adjacent fault.
• "Whole wall went dead after I plugged in a heater/hair dryer": breaker did trip, or a load loosened a marginal connection enough to open it.

Quick checks

Before you open anything:

1. Plug a known-good tester or a lamp into the dead outlet. Confirm it is actually dead, not a dead lamp.
2. Use a non-contact voltage tester on the slots, then a plug-in tester or multimeter. Read hot-to-neutral (should be ~120V), hot-to-ground, and neutral-to-ground. A reading of 120V hot-to-ground but 0V hot-to-neutral means an open neutral, not a dead hot.
3. Walk the whole circuit's territory and press RESET on every GFCI and the TEST/RESET on any GFCI breaker. Check bathrooms, garage, exterior, kitchen counter, and unfinished basement first.
4. Re-seat the breaker fully: push firmly to OFF, then back to ON. A breaker can trip and re-rest a hair away from full ON, looking "on."

Isolation tree

Start at the panel, work outward.

1. Tester shows 0V at the dead outlet, other outlets in the area also dead?

   • Yes -> Find and reset the upstream GFCI device or GFCI breaker. If reset holds, done. If it trips again immediately, there is a downstream ground fault or a miswired GFCI (line/load reversed). Open the GFCI and verify LINE feeds the breaker side, LOAD feeds downstream.
   • No, only this outlet dead -> go to step 2.

2. At the dead box, kill the breaker, pull the device. Inspect terminations.

   • Back-stabbed (push-in) wires? These are the number-one cause of an isolated dead outlet. Look for discoloration, melted insulation, or a wire that pulls out with light tension.
   • Loose side screw or a wire-nut splice with a strand backed out? Re-terminate.

3. Reading was 120V hot-to-ground but 0V hot-to-neutral (open neutral)?

   • The neutral is open somewhere on the circuit, often at a prior box's back-stab or a daisy-chained splice. Trace upstream box by box; the open is at the last box that still works on its outgoing side.

4. Breaker physically trips when you reset it?

   • Then this is a real overload or short, not a dead-outlet mystery. Pull each device on the circuit and isolate.

Confirming diagnosis

Confirm before you call it fixed:

• GFCI case: device resets and holds, and the previously dead downstream outlets now read 120V hot-to-neutral and pass a plug-in tester's correct-wiring lights. Press TEST on the GFCI; downstream must drop dead, then RESET restores it.
• Loose-connection case: with the device re-terminated to side screws (not back-stabs), the outlet reads a steady 120V under a load (plug in a 1500W heater briefly and watch for voltage sag below ~110V, which means the connection or upstream is still marginal).
• Open-neutral case: neutral-to-ground reads near 0V and hot-to-neutral reads ~120V at every box on the run once the open splice is repaired.

Remediation

• GFCI trip from a real downstream fault: find the faulting load or wiring; do not just hold RESET. A GFCI that will not hold is doing its job.
• Back-stab failure: cut back to clean copper, re-strip, and land on the side screws or use a pigtail. Never re-use a push-in hole that failed.
• Open neutral: repair the splice with a properly torqued wire-nut or terminal; replace any heat-damaged conductor.
• Worn or burnt receptacle: replace with a spec-grade device; tamper-resistant where required by NEC 406.12.

References

• NEC (NFPA 70) Article 406, Receptacles, Cord Connectors, and Attachment Plugs, including 406.12 tamper-resistant requirements.
• NEC (NFPA 70) Article 210.8, Ground-Fault Circuit-Interrupter Protection for Personnel.
• NEC (NFPA 70) Article 314, Outlet, Device, Pull, and Junction Boxes, for box fill and termination.
• UL 498, Standard for Attachment Plugs and Receptacles, for device ratings and terminal types.