MTU 12 V 4000 L63 Operating Instructions Manual page 103

020 – SS T-Exhaust A
Yellow alarm.
Associated parameter 2.0126.932
Cause
Exhaust gas temperature (A
side) after turbine too high (limit
value 2). Incorrect ignition timing,
mixture too lean or too rich,
damage to turbine.
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).
ZKP-Number:
Corrective action
1. Check exhaust turbocharger.
2. Check ignition timing (→ Page 137).
3. Check mixture setting.
4. Check spark plugs.
ZKP-Number:
Corrective action
1. Check exhaust turbocharger.
2. Check ignition timing (→ Page 137).
3. Check mixture setting.
4. Check spark plugs.
ZKP-Number:
Corrective action
1. Check exhaust turbocharger.
2. Check ignition timing (→ Page 137).
3. Check mixture setting.
4. Check spark plugs.
ZKP-Number:
Corrective action
1. Replace oil filter (→ Page 158).
2. If this fault message occurs again after unexpectedly short filter
runtime, check oil filter for deposits, change oil if required
(→ Page 156).
MS150058/01E 2012-07 | Troubleshooting | 103