Diagnostic Aids

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Possible causes of this DTC are the following conditions:

The stop lamp switch circuit is shorted to voltage.
The stop lamp switch is misadjusted.
The stop lamp switch is stuck closed.
A brake pedal that is binding.
Both brake light bulbs are burned out.