MTU 12 V 4000 M33F Operating Instructions Manual page 121

232 – SD Charger 1 Speed
Signal error, primary turbocharger speed sensor
Yellow alarm; warning
Cause
Speed sensor of primary
turbocharger faulty.
Short circuit or wire break.
233 – SD Charger 2 Speed
Signal error, secondary turbocharger speed sensor
Yellow alarm; warning
Cause
Speed sensor of secondary
turbocharger faulty.
Short circuit or wire break.
239 – SD P-Diff Fuel
Differential pressure sensor for fuel faulty (only occurs with SD alarm 'fuel before filter' or 'fuel after
filter'.
Yellow alarm; warning
Cause
Fuel differential pressure sensor
faulty.
240 – SD P-Fuel
Signal error, fuel pressure sensor
Yellow alarm; warning
Cause
Fuel pressure sensor faulty.
Short circuit or wire break.
ZKP-Number: 1.3011.128
Corrective action
1. Check sensor and wiring (B44.1), replace as necessary
(→ Page 260).
2. Fault is rectified when engine is restarted (→ Page 79).
3. Contact Service.
ZKP-Number: 1.3011.129
Corrective action
1. Check sensor and wiring (B44.2), replace as necessary
(→ Page 260).
2. Fault is rectified when engine is restarted (→ Page 79).
3. Contact Service.
ZKP-Number: 1.8004.598
Corrective action
u Check for additional messages.
ZKP-Number: 1.8004.565
Corrective action
1. Check sensor and wiring (B34), replace as necessary
(→ Page 260).
2. Fault is rectified when engine is restarted (→ Page 79).
3. Contact Service.
MS150069/02E 2014-03 | Troubleshooting | 121