Troubleshooting By Failure Code, Part 1 - Komatsu Galeo PC138US-8 Shop Manual

HYDRAULIC EXCAVATOR
PC138US-8
PC138USLC-8
Machine model
PC138US-8
PC138USLC-8
40 Troubleshooting

Troubleshooting by failure code, Part 1

Failure code [989L00] Engine controller lock caution 1 .................................................................................. 3
Failure code [989M00] Engine controller lock caution 2 ................................................................................. 3
Failure code [989N00] Engine controller lock caution 3.................................................................................. 4
Failure code [AB00KE] Charge voltage low.................................................................................................... 6
Failure code [B@BAZG] Eng oil press. low .................................................................................................... 8
Failure code [B@BAZK] Eng oil level low ....................................................................................................... 8
Failure code [B@BCNS] Eng coolant overheat .............................................................................................. 9
Failure code [B@HANS] Hydr oil overheat ..................................................................................................... 9
Failure code [CA111] ECM critical internal failure ......................................................................................... 10
Failure code [CA115] Eng. Ne and Bkup speed sensor error ....................................................................... 13
Failure code [CA122] Charge air press sensor high error ............................................................................ 14
Failure code [CA123] Charge air press sensor low error.............................................................................. 16
Failure code [CA131] Throttle sensor high error........................................................................................... 18
Failure code [CA132] Throttle sensor low error ............................................................................................ 20
Failure code [CA144] Coolant temp. sensor high error................................................................................. 21
Failure code [CA145] Coolant temp. sensor low error .................................................................................. 22
PC138US, USLC-8
1SHOP MANUAL
Serial number
20001 and up
20001 and up
SEN02463-01
1
1