499 – SD T-Charge Mix
Red alarm.
Associated parameter 1.8004.632
Cause
Corrective action
Mixture temperature sensor
defective, short circuit or wire
break.
u
Check sensor and cabling (B73), replace as necessary. Fault is
rectified following engine restart.
511 – HIHI P-Charge Mix A
Red alarm. Engine shutdown.
Associated parameter 2.0181.932
Cause
Corrective action
Mixture pressure on A side too
high (limit value 2).
1. Check emissions.
2. Check ignition timing (→ Page 141).
3. Check exhaust back pressure.
4. Check valve clearance (→ Page 145).
5. Check throttle.
6. Check mixture coolant system.
512 – HIHI P-Charge Mix B
Red alarm. Engine shutdown.
Associated parameter 2.0182.932
Cause
Corrective action
Mixture pressure on B side too
high (limit value 2).
1. Check emissions.
2. Check ignition timing (→ Page 141).
3. Check exhaust back pressure.
4. Check valve clearance (→ Page 145).
5. Check throttle.
6. Check mixture coolant system.
513 – SD P-Coolant Diff
Red alarm.
Associated parameter 1.8004.610
Cause
Corrective action
Coolant differential pressure
sensor defective, short circuit or
wire break.
u
Check sensors and cabling (B16.1, B16.3), replace as
necessary. Fault is rectified following engine restart.
515 – AL Starter Not Engaged
Yellow alarm.
Associated parameter 1.8004.123
Cause
Corrective action
Gas temperature sensor
defective, short circuit or wire
break.
1. Not installed in all engine versions (optional).
2. Check sensor and cabling (B38), replace as necessary.
114 | Troubleshooting | MS150103/01E 2015-03
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