MTU 12V4000C*5 series Operating Instructions Manual page 85

25 – HI P-Diff-Lube Oil
Cause
The differential oil pressure at
sensors B5.1 and B5.3 has
violated limit value 1. The
differential oil pressure is too
high.
26 – SS P-Diff-Lube Oil
Cause
The differential oil pressure at
sensors B5.1 and B5.3 has
violated limit value 2. The
differential oil pressure is too
high.
27 – HI Level Leakage Fuel
Cause
Switch F46 in the collection tank
has tripped. The HP fuel system is
leaking.
30 – SS Engine Overspeed
Cause
Engine speed has violated the
limit value or the engine
overspeed test has been tripped.
Engine emergency stop has been
tripped.
31 – HI ETC1 Overspeed
Cause
The speed of the LP turbocharger,
A side, at sensor B44.1 has
violated limit value 1. The exhaust
turbocharger speed is too high.
Cause: Fault or malfunction of
another exhaust turbocharger.
Corrective action
1. Replace engine oil filter.
2. Contact Service.
Corrective action
1. Replace engine oil filter.
2. Contact Service.
Corrective action
u Contact Service.
Corrective action
1. If an emergency stop has been tripped by the engine overspeed
test, restart the engine.
2. Contact Service if the emergency stop was tripped by the engine.
Corrective action
1. Reduce power.
2. Contact Service.
MS15041/03E 2018-08 | Troubleshooting | 83