20 – SS T-Exhaust A
PV-Number:
Cause
Corrective action
The exhaust temperature at
sensor B4.21 has violated upper
limit value 2. The exhaust gas
temperature at bank A is too high.
An emergency engine shutdown
has been initiated.
1. Observe any other messages.
2. Check individual exhaust gas temperatures of bank A at LOP .
3. Check that existing exhaust flaps open completely.
4. Carry out injector test as per DiaSys description (if DiaSys is
available).
5. Check injectors of conspicuous cylinders on bank A.
6. Replace defective injectors (→ Page 112).
7. Check and adjust valve clearance (→ Page 108).
8. Contact Service.
21 – HI T-Exhaust B
PV-Number:
Cause
Corrective action
The exhaust temperature at
sensor B4.22 has violated upper
limit value 1. The exhaust gas
temperature at bank B is too high.
1. Reduce power.
2. Observe any other messages.
3. Check individual exhaust gas temperatures of bank B at LOP .
4. Check that existing exhaust flaps open completely.
5. Carry out injector test as per DiaSys description (if DiaSys is
available).
6. Check injectors of conspicuous cylinders on bank B.
7. Replace defective injectors (→ Page 112).
8. Check and adjust valve clearance (→ Page 108).
9. Contact Service.
22 – SS T-Exhaust B
PV-Number:
Cause
Corrective action
The exhaust temperature at
sensor B4.22 has violated upper
limit value 2. Exhaust temperature
is too high. An emergency engine
shutdown has been initiated.
1. Observe any other messages.
2. Check individual exhaust gas temperatures of bank B at LOP .
3. Check that existing exhaust flaps open completely.
4. Carry out injector test as per DiaSys description (if DiaSys is
available).
5. Check injectors of conspicuous cylinders on bank B.
6. Replace defective injectors (→ Page 112).
7. Check and adjust valve clearance (→ Page 108).
8. Contact Service.
23 – LO Coolant Level
PV-Number:
Cause
Corrective action
Coolant level in high temperature
circuit at switch F33 is too low.
1. Observe any other messages.
2. Check engine coolant level (→ Page 145).
3. Check relief bore of engine coolant pump (→ Page 149).
4. Check coolant circuit visually for leaks.
5. Contact Service.
68 | Troubleshooting | M015650/06E 2018-05
TIM-ID: 0000082479 - 001
