What does P0928 Mean? The Transmission Control Module (TCM) monitors the Gear Shift Lock Solenoid. The TCM sets the OBDII code when the Gear Shift Lock Solenoid is not to factory specifications. engine code P0928P0928 fixobd P0928dtc P0928obd code P0928obd2 P0928P0928 car codediagnostic code P0928car code P0928check engine code P0928fehlercode P0928P0928 fiatcodigo P0928codigo falla P0928P0928 kody b??dówcodigo de falla P0928 What are the common causes of P0928 ? An air leak forward of the DPF will change the sensor readings resulting in the code Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks. Fuel with a large percentage of sulfur will clog the DPF quickly How do you troubleshoot P0928 ? The valves of each cylinder are kept closed using a pair of arms that replace the conventional engine's roller-type rocker arm. P0928 code one of these arms follows the cam profile while the second arm connects to the valves. During normal engine operation the two arms are joined by a locking pin. Searches related to P0928 Code - Gear Shift Lock Solenoid/Actuator Control Circuit 'A'/Open P0928 P0929