Komatsu PC200-8M0 Shop Manual page 700

SEN06135-00
Cause
6 Defective pump controller
7 Defective machine monitor
24
40-303
Procedure, measuring location, criteria and remarks
If no failure is found by above checks, pump controller is defective.
(Since this is an internal defect, troubleshooting cannot be performed.)
If no failure is found by above checks, machine monitor is defective.
(Since this is an internal defect, troubleshooting cannot be performed.)
303 Troubleshooting by failure code, Part 3
Failure code [DA2QKR] CAN2 Discon (Pump Con)
PC200, 200LC, 220, 220LC-8M0