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3-34
Fault code
J1939 SPN
J1939 FMI
Reason
Effect (only when fault code is active)
1677
3031
4
After treatment diesel exhaust fluid tank
temperature sensor - Voltage below normal or
shorted to low source. Low signal voltage
detected at the diesel exhaust fluid tank
temperature sensor circuit.
Possible reduced engine performance.
1678
3031
3
After treatment diesel exhaust fluid tank
temperature sensor - Voltage above normal or
shorted to high source. High signal voltage or
open circuit detected at the diesel exhaust fluid
tank temperature sensor circuit.
Possible reduced engine performance.
1679
3031
2
After treatment diesel exhaust fluid tank
temperature - Data erratic, intermittent, or
incorrect. The diesel exhaust fluid tank
temperature sensor has indicated a tank
temperature too high or too low for the ambient
conditions.
Possible reduced engine performance.
1682
3362
31
Aftertreatment diesel exhaust fluid dosing unit
input lines - Condition exists.
The aftertreatment diesel exhaust fluid dosing
unit is unable to prime.
Possible reduced engine performance.
1683
3363
3
Aftertreatment diesel exhaust fluid tank heater -
Voltage above normal or shorted to high
source. High signal voltage detected at the
aftertreatment diesel exhaust fluid tank heater
circuit.
Possible reduced engine performance.
1684
3363
4
Aftertreatment diesel exhaust fluid tank heater -
Voltage below normal, or shorted to low source.
L o w s i g n a l v o l t a g e d e t e c t e d a t t h e
aftertreatment diesel exhaust fluid tank heater
circuit.
Possible reduced engine performance.
1691
100
18
After treatment diesel oxidation catalyst
conversion efficiency - Data valid but below
normal operating range - Moderately severe
level. The temperature increase across the
aftertreatment catalyst is lower than expected.
Possible frequent need for aftertreatment
regeneration.
1695
3513
3
Sensor supply 5 - Voltage above normal or
shorted to high source.
High voltage detected at sensor supply 5 circuit
in the oem harness.
the engine will operate in limp home mode.
1696
3513
4
Sensor supply 5 - Voltage below normal or
shorted to low source.
Low voltage detected at sensor supply number
5 circuit in the oem harness.
the engine will operate in limp home mode.
1712
3363
18
Aftertreatment diesel exhaust fluid tank heater -
Data valid but below normal operating range -
Moderately severe level. The aftertreatment
diesel exhaust fluid tank heater is unable to
thaw the frozen diesel exhaust fluid.
Possible reduced engine performance.
※
Some fault codes are not applied to this machine.
Summary of Contents for HL955
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