MTU 12 V 4000 M23F Operating Instructions Manual page 101

31 – HI ETC1 Overspeed
Speed of primary turbocharger too high (limit value 1)
Yellow alarm; warning
Cause
Clogged charge-air circuit or
fault in turbocharger.
32 – SS ETC1 Overspeed
Speed of primary turbocharger too high (limit value 2)
Red alarm; engine shutdown
Cause
Clogged charge-air circuit or
fault in turbocharger.
33 – HI P-Diff-Fuel
Fuel filter differential oil pressure too high (limit value 1)
Yellow alarm; warning
Cause
Fuel filter not functioning
correctly.
34 – SS P-Diff-Fuel
Fuel filter differential oil pressure too high (limit value 2)
Red alarm; engine shutdown
Cause
Fuel filter not functioning
correctly.
36 – HI ETC2 Overspeed
Speed of 1st secondary turbocharger too high (limit value 1)
Yellow alarm; warning
Cause
Clogged charge-air circuit or
fault in turbocharger.
ZKP-Number: 2.3011.931
Corrective action
1. Reduce power.
2. Check air filter.
3. Contact Service.
ZKP-Number: 2.3012.932
Corrective action
1. Check air filter.
2. Contact Service.
ZKP-Number: 2.0114.931
Corrective action
1. Replace fuel filter (→ Page 187).
2. Contact Service.
ZKP-Number: 2.0114.932
Corrective action
1. Replace fuel filter (→ Page 187).
2. Contact Service.
ZKP-Number: 2.3013.931
Corrective action
1. Reduce power.
2. Contact Service.
MS150068/01E 2014-01 | Troubleshooting | 101