Bobcat S70 P21C2 Error Code
P21C2 Error Code
DEF Main Heater Relay Open Circuit is the main cause of P21C2 error.To solve P21C2 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 S70 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.