P1810 TFP Valve Position Switch Circuit (GM) P1811 Maximum Adapt and Long Shift (GM) P1819 Internal Mode Switch - No Start/Wrong Range (GM) P1820 Internal Mode Switch Circuit A Low (GM) P1822 Internal Mode Switch Circuit B High (GM) P1823 Internal Mode Switch Circuit P Low (GM) P1825 Internal Mode Switch - Invalid Range (GM) P1826 Internal Mode Switch Circuit C High (GM) P1851 Implausible Signal From ABS Control Module (Volkswagen) P1854 Drive Train CAN-Bus Inoperative (Volkswagen) P1860 TCC PWM Solenoid Circuit Electrical (GM) P1887 TCC Release Switch Circuit (GM) P1899 Park/Neutral Position Switch Stuck In Park or In Gear (Chrysler, Jeep) http://autorepair.about.com/cs/troubleshooting/l/bl_obd_18.htm