Vehicle confirms low idle and no overdrive.  Adjusted base idle and TPS sensor.  Idles perfect. Used scan tool to view OD command.  Circuit and solenoid tests ok. Removed pan to inspect OD solenoid

The truck came in without symptoms.  Only check engine light.  Found P0240 Turbo boost sensor b circuit range/performance.  Pressurized boost system with regulated shop air and found small leak at pas