MTU 20V4000C55, Operating Instructions Manual

Page: 69 / 226

648 – SD P-Charge Air B
Cause Corrective action
The charge-air pressure sensor
(B10.11) after intercooler, B side,
supplies incorrect signal or no
signal. 1. Check engine wiring (→ Page 158).
2. Contact Service.
727 – AL L1 Delta T-NT Intercooler
Cause Corrective action
The differential temperature at
sensors B26 and B90 has
exceeded the limit value. The LT
coolant inlet temperature is too
high in relation to the ambient air
temperature. 1. Check cooler (plant side) for contamination.
2. Check operation of fan (plant side).
3. Contact Service.
728 – AL L2 Delta T-NT Intercooler
Cause Corrective action
The differential temperature at
sensors B26 and B90 has
exceeded the limit value. The LT
coolant inlet temperature is too
high in relation to the ambient air
temperature. 1. Check cooler (plant side) for contamination.
2. Check operation of fan (plant side).
3. Contact Service.
745 – AL Emission Fault 1
Cause Corrective action
Emission fault summary alarm 1. Check for additional messages.
2. Contact Service.
754 – SD Bosch LSU Lambda Sensor
Cause Corrective action
The lambda sensor (B89) supplies
incorrect signal or no signal. 1. Check lambda sensor and replace as necessary (→ Page 166).
2. Contact Service.
806 – SD Charger 3 Speed
Cause Corrective action
The speed sensor (B44.3) HP
turbocharger supplies incorrect
signal or no signal. 1. Check engine wiring (→ Page 158).
2. Contact Service.
833 – AL Emission Warning
Cause Corrective action
Emission fault summary alarm 1. Check for additional messages.
2. Contact Service.
MS15043/00E 2016-04 | Troubleshooting | 69
TIM-ID: 0000065298 - 002