Bobcat 863 U1003 Error Code
U1003 Error Code
ECU Received Engine Shutdown Request from Machine Controller is the main cause of U1003 error.To solve U1003 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 863 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.