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Top light on, Off, Off, 1 flash

Top light on, Off, Off, 1 flash — Ground fault detected

Tesla Wall Connector · (Gen 3)

What does Top light on, Off, Off, 1 flash mean?

A ground fault has been detected, meaning current is leaking through an unsafe path. This could be a line-to-ground or neutral-to-ground fault.

Common Causes

  • Current leakage to ground
  • Faulty wiring or grounding
  • Water ingress

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Disconnect the charging handle from the car and try reconnecting.

  2. 2

    Turn OFF the circuit breaker for the Wall Connector, wait 10 seconds, then turn it back ON.

  3. 3

    If the problem persists, contact Tesla.

Browse all codes in this manual (49)
Verified technical data. Last updated: April 2026

Related Faults

1 red blinkOne red blink — Ground fault detected, charging disabled2 red blinksTwo red blinks — Ground assurance fault, high ground resistance detected3 red blinksThree red blinks — High temperature detected, charging limited or disabled
Source: Tesla Wall Connector (Gen 3)
Open Manual (Page 24)Search more codes in this manual