SEN03843-00
WA250, 250PZ-6 40-330 29
330 Troubleshooting by failure code (Display of code), Part 3
Failure code [CA553] Common rail pressure high error 1
Failure code [CA553] Common rail pressure high error 1 1
Action code Failure code
Trouble
Common rail pressure high error 1
(Engine controller system)
E03 CA553
Contents of
trouble
• Voltage (1) in common rail circuit is abnormally high.
Action of
controller
• None in particular.
• Turns the centralized warning lamp and alarm buzzer ON.
Problem that
appears on
machine
• Engine sound becomes larger under no load or light load.
• Engine output drops.
Related
information
• The input state (common rail pressure) from the common rail pressure sensor can be checked with
the monitoring function (Code: ENGINE, 36400, RAIL PRESS).
• The input state (voltage) from the common rail pressure sensor can be checked with the monitoring
function (Code: ENGINE, 36402, RAIL PRESS).
• 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 Defect in related system If another code is displayed, carry out troubleshooting for it.
2
Defective connection of
ground terminal
Inspect following directly for connection of ground terminal.
• Ground terminal (battery (-)) of machine main unit.
• Ground terminal of engine
• Ground terminal of engine controller
• Ground terminal of starting motor
3
Broken O-ring of supply
pump actuator
Inspect O-ring directly for breakage.
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