SEN04120-03 40 Troubleshooting
18 PC130-8
Failure code [CA553] Rail press. high error 1
User code Failure code
Trouble
Rail press. high error
(Engine controller system)
E15 CA553
Contents of
trouble
• Common rail pressure sensor circuit detected abnormally high pressure (level 1).
Action of
controller
• None in particular.
Problem that
appears on
machine
• Output drops.
Related
information
• Common rail pressure can be checked with monitoring function.
(Code: 36400 Common rail pressure)
• Method of reproducing failure code: Start engine.
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
1 Defective related system If another failure code is indicated, carry out troubleshooting for it.
2 Use of improper fuel
Check fuel used directly
(for high viscosity).
3
Defective electrical system of
common rail pressure sensor
Common rail pressure sensor may have electric trouble. Carry out
troubleshooting for failure code [CA451].
4
Defective mechanical system
of common rail pressure sen-
sor
Check mechanical system of common rail pressure sensor directly.
5 Defective overflow valve
Check overflow valve directly for broken spring, worn seat, and
stuck ball.
6 Clogging of overflow piping Check overflow piping directly for clogging.
7 Defective pressure limiter Check pressure limiter directly for mechanical defect.
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