Download to your phone or computer the app "spydercodes" this will give you what it is and what to do....P099C is a Blipper selenoid implausible control intervention...and the P099B is for the same reason. Seems to be active when it should not be....Spydercodes gives some measurments you can use to check it out....
Gene and Ilana De Laney Mt. Helix, California
2012 RS sm5
2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black