Maybe this is a dumb question, but is there a way to test for wrong Wifi password?

I know you can do WL_CONNECT to check if the password works, but is there a command for checking if the password is wrong? Not just by waiting.

  • my esp is trying to connect to the WiFi Oct 15, 2019 at 19:20
  • i guess that makes my esp client Oct 15, 2019 at 19:21
  • github.com/esp8266/Arduino/blob/…
    – Juraj
    Oct 16, 2019 at 5:05
  • there's no way to tell if a password is right or wrong other than by trying to use it.
    – dandavis
    Oct 16, 2019 at 16:13
  • @dandavis but the WiFi class does not return the info even though it's available. It simply returns an error.
    – Sim Son
    Oct 16, 2019 at 17:54

2 Answers 2


The information is available on SDK level. If you include #include "user_interface.h", you can use function wifi_station_get_connect_status(). It returns one of:


The WiFi.status() function uses function wifi_station_get_connect_status(), but returns WL_CONNECT_FAILED for STATION_WRONG_PASSWORD.


one can check for wrong password using the following code snippet

  if (WiFi.status() == WL_CONNECTED)
    Serial.println("Connected successfully");
  else if (WiFi.status() == WL_NO_SSID_AVAIL) 
    Serial.println("Wifi network is not avaliable");
    Serial.println("Password is not correct");

more information can be found on GitHub here: https://github.com/aeonSolutions/aeonlabs-ESP32-C-Base-Firmware-Libraries


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