FAULTY SPARK PLUG
One of the most common problems that trigger check engine light on Lexus vehicles is a faulty spark plug that no longer fires. Spark plugs need to be replaced from time to time because they are wear and tear items. The replacement of spark plugs should be according to the recommendation in the owner’s manual, typically 120,000 miles for newer models equipped with Platinum or Iridium Spark plugs.
However, in cases of older Lexus vehicles that were equipped with copper spark plugs, you have to be replaced every 30,000 miles.Read more on this topic here

There are over 8 more causes

AutoVfiv:
FAULTY SPARK PLUG
One of the most common problems that trigger check engine light on Lexus vehicles is a faulty spark plug that no longer fires. Spark plugs need to be replaced from time to time because they are wear and tear items. The replacement of spark plugs should be according to the recommendation in the owner’s manual, typically 120,000 miles for newer models equipped with Platinum or Iridium Spark plugs.
However, in cases of older Lexus vehicles that were equipped with copper spark plugs, you have to be replaced every 30,000 miles.Read more on this topic here

There are over 8 more causes

VSC means Vehicle Stability Control....

It has absolutely nothing to do with spark plugs