Bobcat S550 D3907 Error Code
D3907 Error Code
Left Joystick Y-Axis Not in Neutral is the main cause of D3907 error.To solve D3907 locate and open the low-pressure valve, then attach the refrigerant to the valve and charge from there. Ensure you use the right refrigerant type and amount, as specified by a manufacturer. It is possible to overcharge the AC, so consider seeking help from a mechanic.
Tip For S550 Model
It is recommended in cold weather to cycle the glow plugs twice before attempting to start the engine. This will allow for additional heating time for cold weather starting.