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1 red blink

One red blink — Ground fault detected, charging disabled

Tesla Wall Connector · (Gen 3)

What does 1 red blink mean?

A ground fault has been detected, meaning there's an unsafe current path. Charging is disabled until the fault is cleared.

Common Causes

  • Damage to the charging handle, cable, or Wall Connector.
  • Water ingress into the charging equipment.
  • Improper grounding in the electrical circuit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the charging handle, cable, and Wall Connector for any visible damage.

  2. 2

    Check for signs of water or moisture damage.

  3. 3

    Have an electrician verify that the ground wire is not directly connected to a conductor wire in the circuit.

  4. 4

    Ensure all physical ground connections are secure.

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

Related Faults

2 red blinksTwo red blinks — Ground assurance fault, high ground resistance detected3 red blinksThree red blinks — High temperature detected, charging limited or disabled3 red flashesThree red flashes — Charging stopped due to high temperature
Source: Tesla Wall Connector (Gen 3)
Open Manual (Page 55)Search more codes in this manual