Tesla Wall Connector Red Light: What Every Color and Pattern Means

The Tesla Wall Connector Gen 3 uses a single LED bar that changes color to indicate status. Green = connected and charging. Blue = communicating with vehicle. Amber/Yellow = power sharing or waiting to charge. Red = FAULT detected. A solid red light means a persistent fault that prevents charging. A blinking red light (with a specific number of blinks) indicates the specific fault type: 1 red blink = high ground resistance (electrician needed). 2 red blinks = ground fault detected (moisture in connector or wiring issue). 3 red blinks = high internal temperature (allow cooling, check ventilation). 4 red blinks = power sharing communication fault (if power sharing is configured). 5 red blinks = power fault from the electrical supply. 6 red blinks = overcurrent detected. For Gen 2 Wall Connectors, the LED colors are similar but the blink patterns differ. The most common red light cause is a ground fault (2 blinks) from moisture entering the charging connector or the junction box where the Wall Connector is wired. This happens more frequently on outdoor installations without weatherproof covers.