MTU 16V4000L32FNER Operating Instructions Manual page 143

515 – AL Starter Not Engaged
Yellow alarm.
Associated parameter 2.1090.926
Cause
Starter not engaged. ECU does
not detect engine speed during
starting sequence.
517 – SD P-Charge Mix before Throttle
Red alarm.
Associated parameter 1.8004.631
Cause
Mixture pressure sensor before
restrictor flap faulty, short circuit
or wire break.
520 – SD P-Intake Air after Filter A
Yellow alarm.
Associated parameter 1.0186.900
Cause
Intake air pressure sensor after
filter on A side faulty, short circuit
or wire break.
522 – SD P-Intake Air after Filter B
Yellow alarm.
Associated parameter 1.0187.900
Cause
Intake air pressure sensor after
filter on B side faulty, short circuit
or wire break.
534 – HIHI Power Difference
Red alarm. Engine shutdown.
Associated parameter 2.1005.931
Cause
Set and actual power deviate
excessively from each other.
Corrective action
1. Check starter.
2. Check cabling (→ Page 202).
3. Check speed sensor B1.1 if speed is not indicated although engine
is turning (→ Page 203).
Corrective action
u Check sensor and cabling (B79.23), replace as necessary
(→ Page 203) (→ Page 202). Error cleared after restarting the
engine.
Corrective action
u Check sensor and cabling (B81.1), replace as necessary
(→ Page 203) (→ Page 202). Error cleared after restarting the
engine.
Corrective action
u Check sensor and cabling (B81.2), replace as necessary
(→ Page 203) (→ Page 202). Error cleared after restarting the
engine.
Corrective action
1. Check converter.
2. Check fuel settings.
3. Check emissions (→ Page 47).
MS150121/02E 2017-09 | Troubleshooting | 143