Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
B2530 02
The front fog lamp relay control circuit is shorted to ground.
B2530 05
The front fog lamp relay control circuit is shorted to battery positive voltage or open.