Hyundai HL955 Manual page 95

Fault code
J1939 SPN
J1939 FMI
2555 Intake air heater 1 circuit - Voltage above
729 normal, or shorted to high source. High voltage
3 detected at the intake air heater signal circuit.
2556 Intake air heater 1 circuit - Voltage below
729 normal, or shorted to low source. Low voltage
4 detected at the intake air heater signal circuit.
2634 VGT Actuator controller - Bad intelligent device
641 or component. An internal error has been
12 detected by the smart VGT controller.
VGT Actuator driver circuit - abnormal update
2636
rate. No communications on the J1939 data link
641
between the engine ECM and the smart VGT
9
controller.
After treatment diesel oxidation catalyst
conversion efficiency - Data valid but below
2638
normal operating range - Least severe level.
5298
The temperature increase across the
17
aftertreatment diesel oxidation catalyst is lower
than expected.
Aftertreatment diesel particulate filter differential
2639 pressure - Data valid but above normal
3251 operating range - Least severe level. The soot
15 load of the aftertreatment diesel particulate filter
has exceeded the recommended limits.
2646 Engine coolant temperature - Condition exists.
110 The EGR valve was closed to reduce engine
32 coolant temperature.
Brake switch and accelerator pedal position
2718
incompatible - Condition exists. The ECM has
520325
detected the brake pedal and accelerator pedal
31
were depressed simultaneously.
Aftertreatment outlet NOx sensor - Abnormal
2771 update rate. No communications or an invalid
3226 data transfer rate detected on the J1939 data
9 link between the ECM and the aftertreatment
outlet NOx sensor.
Particulate trap active regeneration inhibited
2777 due to inhibit switch - Condition exists.
3703 Regeneration of the diesel particulate filter has
31 been prevented due to the permit switch being
disabled.
Exhaust gas recirculation temperature - Data
2961
valid but above normal operational range -
412
Least severe level. EGR temperature has
15
exceeded the engine protection limit.
Exhaust gas recirculation temperature - Data
2962
valid but above normal operational range -
412
Moderately severe level. EGR temperature has
16
exceeded the engine protection limit.
※ Some fault codes are not applied to this machine.
Reason
3-39
Effect (only when fault code is active)
The intake air heaters may be ON or OFF all
the time.
The intake air heaters may be ON or OFF all
the time.
Possible reduced engine performance.
Possible reduced engine performance.
Possible frequent need for aftertreatment
regeneration.
Possible reduced engine performance.
Possible reduced engine performance.
The engine will operate in limp home mode.
Possible reduced engine performance.
Possible frequent need for aftertreatment
regeneration.
Possible reduced engine performance.
Possible reduced engine performance.