Possible Cause

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• Front A/F sensor (bank 2, sensor 1) AFVB2 line short to ground
• Front A/F sensor (bank 2, sensor 1) AFVB2 line short to front A/F sensor (bank 2, sensor 1) AFCB2 line