73
Indication status Fault Remarks
80° – 90 °C FLASHING
(2x per
sec.)
OFF
OFF
high exhaust
temperature
(over 80 °C)
or
defect exhaust temperature
sensor or bad connection
check raw water
system,
strainer, impeller pump
contact authorized workshop
ON
(2x per sec.)
high approx
105 °C OFF
OFF
OFF
engine coolant
temperature too high
after cooling down,
check engine coolant
level
contact authorized workshop
ON
(2x per sec.)
120 °C
OFF
OFF
OFF
defect engine coolant
sensor or
bad connection
after cooling down,
check engine coolant
level
contact authorized workshop
ON
(2x per sec.)
80° – 90 °C
OFF
OFF
OFF
unstable idle speed, no
indication on tachometer
defect speed sensor
or
sensor connection
contact authorized workshop
OFF
80° – 90 °C
ON
OFF
OFF
Trouble in governing loop,
involved components: control
solenoid, rack, control gear
of unit injector, rack position
sensor
contact authorized workshop
ON
BUKH STEYR MOTORS SOLAS