Yes, PINGING is a Scrabble word!

Letter values in Scrabble US: P 3, I 1, N 1, G 2, I 1, N 1, G 2.

Is it a valid word?

PINGING is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

hit with a pinging noise
sound like a car engine that is firing too early
make a short high-pitched sound
contact, usually in order to remind of something
send a message from one computer to another to check whether it is reachable and active