MTU 16V2000S96 - Page 68

444 – SD U-PDU
Yellow alarm; warning
Cause Corrective action
Sensor of injector output stage
faulty.
u Replace Engine Control Unit.
445 – SD P-Ambient Air
Yellow alarm; warning
Cause Corrective action
Ambient air pressure sensor
faulty.
u Replace Engine Control Unit (sensor is in the ECU).
446 – SD P-HD2
Yellow alarm; warning
Cause Corrective action
Rail pressure sensor faulty, high-
pressure regulator emergency
mode;
u Check sensor B48.2 and wiring, replace as necessary
(→ Page 138).
450 – SD Idle/End-Torque Input [%]
Yellow alarm; warning
Cause Corrective action
Input signal for initial/final torque
faulty.
1. Check signal transmitter and wiring, replace as necessary.
2. Restart engine (→ Page 36).
454 – SS Power Reduction Active
Yellow alarm; warning
Cause Corrective action
Power reduction activated. u Observe any other messages.
470 – SD T-ECU
Yellow alarm; warning
Cause Corrective action
Temperature sensor for Engine
Control Unit faulty.
u Replace Engine Control Unit at next opportunity.
471 – SD HP fuel control block
Yellow alarm; warning
Cause Corrective action
Actuation of HP fuel control block
faulty.
1. Check HP fuel control block and wiring, replace as necessary
(→ Page 138).
2. Fault is rectified when engine is restarted.
68 | Troubleshooting | MS150094/02E 2015-05
TIM-ID: 0000060724 - 001