728 – AL L2 Delta T-LT Intercooler
Cause
Corrective action
The differential temperature
measured at sensors B26 and B90
has violated limit value 2. The LT
coolant inlet temperature is too
high in relation to the ambient air
temperature.
1. Check cooler for dirt (plant).
2. Check fan operation (plant).
3. Contact Service.
745 – AL Emission Fault 1
Cause
Corrective action
Combined emission fault alarm
1. Observe any other messages.
2. Contact Service.
754 – SD Bosch LSU Lambda Sensor
Cause
Corrective action
The signal from the lambda sensor
(B89.) is faulty or missing.
1. Check lambda sensor, replace as necessary (→ Page 162).
2. Contact Service.
796 – AL HI T-Charge Air B
Cause
Corrective action
The charge-air temperature on the
B side measured at sensor B9.3
has violated limit value 1. The
charge-air temperature is too
high.
u
Contact Service.
797 – AL HIHI T-Charge Air B
Cause
Corrective action
The charge-air temperature on the
B side measured at sensor B9.3
has violated limit value 2. The
charge-air temperature is too
high.
u
Contact Service.
806 – SD Charger 3 Speed
Cause
Corrective action
The signal from the speed sensor
(B44.3) LP turbocharger (A side) is
faulty or missing.
1. Check engine wiring (→ Page 157).
2. Contact Service.
807 – SD Charger 4 Speed
Cause
Corrective action
The signal from the speed sensor
(B44.4) LP turbocharger (B side) is
faulty or missing.
1. Check engine wiring (→ Page 157).
2. Contact Service.
MS150100/06E 2017-08
| Troubleshooting | 83
TIM-ID: 0000064702 - 003
