- EV charging
- EV charger
1 RED BLINK
Tesla 1 RED BLINK: ground-fault protection interrupted charging because it detected an unsafe current path
Risk level
Critical
Stop using the equipment and contact a professional.
Urgency
Immediate
Quick answer
1 RED BLINK means ground-fault protection interrupted charging because it detected an unsafe current path in the cited charger family. The deciding observation is whether any visible water ingress or damage exists on handle, cable, charger or vehicle charge port. Do not infer a failed part from the code alone.
Safety first
What to do now
- Capture the exact charger, vehicle and pattern
Photograph 1 RED BLINK and record the Tesla model, part/serial number, vehicle model, cable used, charge stage and approximate time. Do not clear the event before those facts are saved.
- Run the one deciding check
Stop charging and disconnect only if the connector is dry and safe to handle. Inspect externally for water or damage; do not reset, open or test the circuit. Record whether any visible water ingress or damage exists on handle, cable, charger or vehicle charge port. Change one condition only.
- Use recurrence as the stop point
Visible water or damage is already a stop condition; drying or wiping does not prove the unsafe path has been removed. With no visible damage, the fault still requires an electrician to test protective earth and the branch circuit; the blink does not locate the defect.
What you must never do
- Do not attempt this professional task: Measured handoff for 1 RED BLINK
What a technician must be able to justify
A technician is coming
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Measured handoff for 1 RED BLINK
What they doTest protective-earth continuity, insulation and leakage across the branch, Wall Connector, cable and vehicle boundary before returning the system to service.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- EV charging
- Brand
- Tesla
- Product type
- EV charger
Known code variants
- 1 clignotements rouges Wall Connector
- 1 lampeggi rossi Wall Connector
- 1 parpadeos rojos Wall Connector
- 1 red blink Wall Connector
- 1 rote Blinkzeichen Wall Connector
- Tesla 1 clignotements rouges
- Tesla 1 lampeggi rossi
- Tesla 1 parpadeos rojos
- Tesla 1 red blink
- Tesla 1 rote Blinkzeichen
- Tesla Wall Connector 1 RED BLINK
What it means
Tesla’s official documentation defines 1 RED BLINK as ground-fault protection interrupted charging because it detected an unsafe current path. That is the protection or controller state, not a universal component diagnosis. Visible water or damage is already a stop condition; drying or wiping does not prove the unsafe path has been removed. With no visible damage, the fault still requires an electrician to test protective earth and the branch circuit; the blink does not locate the defect.
Warnings and stop conditions
- Criticalsource verified
Smoke, burning smell, sparks, water, visible damage, abnormal heat or repeated protective-device trips means stay clear and leave charging disabled. Never open the charger, panel or connector and never probe voltage yourself.
Evidence: Troubleshooting a Wall Connector — fault codes
Sources and technical references
- 1
Troubleshooting a Wall Connector — fault codes
Tesla · official_doc
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