FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

HO2S Xcounts Bn 2

Range (0-255)
The HO2S Xcounts B2 increments each time that the HO2S (Bank 2 Sensor 1) crosses the 450 MV threshold. This number resets to zero after it reaches it limit of 255.