The proper operation of the transmissions is highly dependent on the correct amount of transmission fluid. To deliver such fluid, pressure control solenoids are used to send reference signals to the Powertrain Control Module (PCM) to determine the amount of fluid that will enter the transmission. Most automatic transmissions have three solenoids “A”, “B” and “C” built in, but in this code, the problem lies with solenoid “G” which means that the transmission is equipped with more solenoids for better performance.
When the PCM detects that the pressure control solenoid “G” is performing outside the normal parameters set by the manufacturer, the P2808 OBD2 diagnostic code will be set. The Check Engine service light will be displayed on the vehicle’s dashboard.