He is a member of the Democratic Action Party (DAP) in the Pakatan Harapan (PH) coalition.
He is the incumbent Member of Parliament for the Labis constituency since 2018.
He was the Johor State Legislative Assemblyman for Bekok for one term from 1990 to 1995 previously.
Pang previously contested for the Segamat seat in 2004 and 2008 general elections but had lost both the contests to Subramaniam Sathasivam of Barisan Nasional (BN).
He did not participate in the 2013 general elections.
In the 2018 general election, Pang was elected to the Parliament of Malaysia for the Labis constituency, winning 16,977 of the 32,578 votes cast.
He defeated the then Deputy Minister of International Trade and Industry, Chua Tee Yong.