CX210/CX240 ELECTRONIC FUEL SYSTEM
8 - 24
CX EXCAVATORS
FAULT CODE LISTING
Fault Associated Hardware Reason Effect
(only with active code)
F441 Battery voltage low Voltage detected at ECM
power supply, pins 38, 39
and 40 of the engine
harness indicates voltage
is below 6 VDC.
Engine will stop running
or run rough.
F442 Battery voltage high Voltage detected at ECM
power supply, pins 38, 39
and 40 of the engine
harness indicates voltage
is above the maximum
voltage.
No effect on engine
performance.
F443 Accelerator pedal
position sensor.
Low voltage detected at
throttle position sensor +5
VDC supply pin 29 of the
OEM harness.
Engine idles when idle
validation switch
indicates idle and ramps
up to a default set speed
when validation indicates
off idle.
F488 Intake air temp sensor/
EPF
Intake manifold air temp
signal indicates intake
temp. above minimum
engine protection
threshold.
Power de-rate and
possible engine shut
down.
F517 Fuel pump control valve
is mechanically stuck.
A mechanically stuck
control valve has been
detected.
Engine may shut down.
F524 High speed governor
droop selection switch.
Error detected in selector
switch at pin 24 of engine
harness.
Operator can not select
alternate HSG group.
Normal droop is used.
F611 Hot shut down error. ECM detected the engine
has initiated a protection
shut down or has been
keyed off while above a
specified load limit.
No effect.
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