Dear concern please help me about Kobelco sk250-8 excavator electrical problem issues. The monitor showing C012 Fault code. And hydraulic pump control solenoid valve not any voltage. All of operation is too much slow. Thanks
C012 error code means the P1 pump pressure sensor outputs error. 1/- Key OFF and wait one minute. 2/- Swap the connectors of SE-22 and SE-23. 3/- Key ON; don't start engine. 4/- See result on gauge cluster. 5/- Check the wiring, connectors ... from P1 Pump pressure sensor (SE-22) to C1 controller.