P0778 Code: Pressure Control Solenoid “B” Electrical
The powertrain control module will log a P0778 trouble code if it detects a problem with the pressure control solenoid.
Low transmission fluid levels, a faulty pressure control solenoid, and internal transmission failure can cause the engine computer to log a P0778 code.
Activated limp mode, an overheating transmission, and poor fuel economy are common symptoms associated with a P0778 trouble code.
Contents (AT) vehicles rely on computer-controlled solenoids such as the pressure control solenoid to regulate hydraulic system pressure. This solenoid is also used by thepowertrain control module(PCM) to help achieve the correct timing and feel for transmission shifting. If the PCM notices that the pressure control solenoid is not performing as it should, it will log a P0778 code.
