4.2.7. SPN 102, FMI 16, Boost pressure ABOVE NORMALΒΆ
Description
The measured boost pressure rises above the warning limit during operation.
Possible causes are:
- Too high fuel injection quantity (mg/str) for the engine type (tuning chip).
- Incorrect nozzles for the engine type.
- An incorrect turbo charger for the engine type.
- The boost pressure sensor wiring is defective.
- The boost pressure sensor is defective.
Reaction in EEM
The FC is stored and the warning lamp is activated. Engine power will be reduced (Degradation Level 2). The CAN message indicates active fault. No recovery before system reset.
Solution
Find the cause for the high boost pressure indication:
- Check that the control system is configured according to the original specifications and no additional devices have been attached.
- Check that the nozzles and the turbocharger meet the original specifications.
To check the electrical defects, check the boost pressure sensor, the sensor wiring and the controller input:First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following paths:
- Check the boost pressure sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
- Check the operation with another boost pressure sensor to see if the boost pressure sensor is defective.
See Boost pressure and temperature sensor sensor for reference.