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 148).
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 54).
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 148).
2. Fault is rectified when engine is restarted.
472 – AL Stop SD
Red alarm; emergency stop
Cause
Corrective action
Shutdown channels sensor fault.
u
Contact Service.
MS150118/01E 2015-05
| Troubleshooting | 87
TIM-ID: 0000060724 - 001