Is there a way to check if the password entered for the wifi is correct other than looking at the logs? I'm looking at the dmesg logs for now, to check if there is a 4WAY_HANDSHAKE_TIMEOUT. But it hasn't proved to be very reliable so far. I want a reliable way to tell when my wireless client is not connecting to the router because of a mistake in entering the password.

Thanks
Aravind

I think that is by design.  The AP ignores someone using the wrong password rather than tell them it is incorrect.  This makes it harder to brute-force attack the AP by trying different passwords.

You could use 802.1X (WPA Enterprise) to have a log of both successful and unsuccessful logins.  That requires setting up a RADIUS server which can be inside or outside the router.