What does P0784 Mean? This P0784 code indicates that the 4-5 shift valve in the valve body is locked in the direction of the spring compression. The Transmission Control Module (TCM) controls the gearshifts by turning the shift solenoid valves ON/OFF and switching oil pressure to the valves in the valve body. The TCM calculates the actual transmission gear by comparing the signals from the input speed sensor and the output speed sensor. engine code P0784P0784 fixobd P0784dtc P0784obd code P0784obd2 P0784P0784 car codediagnostic code P0784car code P0784check engine code P0784fehlercode P0784P0784 fiatcodigo P0784codigo falla P0784P0784 kody b??dówcodigo de falla P0784 What are the common causes of P0784 ? Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors. Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors. Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7. How do you troubleshoot P0784 ? Repairing a P0784 trouble code requires the mechanic to do the following: First, rebuild the transmission if needed. This includes installing a new torque converter as well. Replace any shorted, burned, corroded, or otherwise damaged wiring, connectors, or components. Replace the hydraulic pump if necessary. This requires the removal and partial disassembling of the transmission on the part of the mechanic. Replace the shift solenoid if it is faulty. While not commonly at fault, replace the PCM if it is bad. This requires the mechanic to reprogram the PCM once installed. Searches related to P0784 Code - 4-5 Shift Malfunction P0784 P0785
