Poor Electric Grid Power Quality Detected (AC Charging Reduced or Interrupted)

Common Symptoms

• Alert on the touchscreen: "Poor electric grid power quality detected — Try different charging station or location"
• AC charging slows down or stops
• May coincide with large appliances (washer, A/C) running on the same supply
• DC fast charging / Supercharging still works normally

Probable Causes (Ranked by Likelihood)

• Power supply disturbances in the electrical grid detected by the onboard charger — building wiring/outlet issues, external charging equipment issues, or grid-side conditions Likely
• Other large electric devices (washing machines, air conditioning units) temporarily drawing heavy power on the same supply Possible

Step-by-Step Diagnostic Procedure

1. Per Tesla, this alert is usually specific to the external equipment and power source, not a vehicle issue service can resolve.

2. Try a different wall outlet, and retry (disconnect and reconnect) when other large electric devices aren't drawing power.

3. Try different types of charging equipment at different locations to isolate whether one site's power quality is the problem.

4. Supercharging is unaffected — a Supercharger or Destination Charger is a good fallback while sorting out the AC-side issue.

5. If one location consistently triggers this alert, have an electrician inspect that building's wiring and outlet.

Frequently Asked Questions