Volvo Engine D11L (Tier 4) Fault Code: U116F00 Lost Communication with Reductant Control Module on Engine Subnet – No Sub Type Information

CONTROL UNIT:
Engine ECU

FAILURE EVENT:
Bus communication with ACM is missing on Engine Subnet.

SYMPTOM:
1. Low power because of engine derate.
2. SCR system does not work properly.
3. Display messages about ECU communication problems.

CONDITIONS:
None

INHIBITING THE DTC:
None

POSSIBLE CAUSES:
1. CAN communication error with ACM. Damaged wire harness or connector.
2. No power supply to ACM.
3. Internal error in the Aftertreatment Control Module (ACM).