Failure Code [B@Bcns] Eng. Water Overheat - Komatsu Galeo PC800-8 Shop Manual

SEN00790-02

Failure code [B@BCNS] Eng. Water Overheat

Action code Failure code
— B@BCNS
Contents of
Engine coolant overheats while engine is running.
trouble
Action of
• Limits output and continues operation.
controller
Problem that
• Engine output lowers.
appears on
• If machine is operated as it is, engine may be damaged.
machine
Related
information
Possible causes
1 Engine coolant overheat
and standard
value in normal
Defective coolant tempera-
state
2
ture sensor system
10
Engine coolant overheat
Trouble
(Engine controller system)
Cause Standard value in normal state/Remarks on troubleshooting
Engine coolant may be overheating. Check it directly and remove cause
if it is overheating.
If cause 1 is not detected, coolant temperature sensor system may be
detective. Carry out troubleshooting for the failure codes [CA144] and
[CA145].
40 Troubleshooting
PC800, 850-8