743 – AL DPF Hard TM Suppression
ZKP-Number: 2.1602.927
Speed drop
Red alarm is activated if engine speed drops during starting sequence.
Cause Corrective action
Hard thermal management was
suppressed too often due to
missing enable from plant.
1. Check DPF.
2. Contact Service.
744 – AL DPF Flash Read Error
ZKP-Number: 1.1602.958
Flash reading error during initialization of the starting values for the DPF function
Yellow alarm – warning
Cause Corrective action
Functional error in the flash
memory.
1. Replace flash memory.
2. Contact Service.
745 – AL Emission Fault 1
ZKP-Number: 2.1600.004
Emission fault 1
Yellow alarm – warning
Cause Corrective action
NOx-, tricane or exhaust gas
temperature sensor defective.
1. Reduce power.
2. Check sensors and wiring (→ Page 189).
3. Contact Service.
746 – AL Emission Fault 2
ZKP-Number: 2.1600.006
Emission fault 2
Red alarm
Cause Corrective action
NOx-, tricane, exhaust back
pressure, p5 or lambda sensor
defective.
Flap actuator faulty.
Malfunction in NOx controller.
1. Check sensors and wiring (→ Page 189).
2. Check actuators.
3. Contact Service.
98 | Troubleshooting | MS150112/01E 2014-10
TIM-ID: 0000029153 - 005
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