MTU 12V4000L32F Operating Instructions Manual page 124

021 – HI T-Exhaust B
Yellow alarm.
Associated parameter 2.0127.931
Cause
Exhaust gas temperature (B side)
after turbine too high (limit value
1). Incorrect ignition timing,
mixture too lean or too rich,
damage to turbine.
022 – SS T-Exhaust B
Yellow alarm.
Associated parameter 2.0127.932
Cause
Exhaust gas temperature (B side)
after turbine too high (limit value
2). Incorrect ignition timing,
mixture too lean or too rich,
damage to turbine.
025 – HI P-Diff. Lube Oil
Yellow alarm.
Associated parameter 2.0154.931
Cause
Pressure loss via oil filter too high
(limit value 1).
026 – SS P-Diff. Lube Oil
Red alarm. Engine shutdown.
Associated parameter 2.0154.932
Cause
Pressure loss via oil filter too high
(limit value 2).
124 | Troubleshooting | MS150104/03E 2017-09
Corrective action
1. Check exhaust turbocharger.
2. Check ignition timing (→ Page 176).
3. Check mixture setting.
4. Check igniters.
Corrective action
1. Check exhaust turbocharger.
2. Check ignition timing (→ Page 176).
3. Check mixture setting.
4. Check igniters.
Corrective action
1. Replace oil filter (→ Page 191).
2. If this fault message occurs again after unexpectedly short filter
runtime, check oil filter for deposits, change oil if required
(→ Page 189).
Corrective action
1. Replace oil filter (→ Page 191).
2. If this fault message occurs again after unexpectedly short filter
runtime, check oil filter for deposits, change oil if required
(→ Page 189).