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Two red blinks (manual reset)

Two red blinks — Earth assurance fault, high earth resistance detected, charging disabled

Tesla Wall Connector · (Gen 3)

What does Two red blinks (manual reset) mean?

The Wall Connector detected high resistance in its earth connection. This safety feature disables charging. It may automatically recover after a period, or require manual intervention.

Common Causes

  • High impedance in the earth conductor.
  • Loose or faulty earth connection.
  • Earth connection not properly bonded upstream.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the physical connections to the Wall Connector's earth terminal.

  2. 2

    Ensure the upstream power supply's earth connection is properly bonded.

  3. 3

    Verify the Wall Connector is properly earthed according to local regulations.

  4. 4

    If the issue persists, consult with an electrician.

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 15)Search more codes in this manual