VOLVOUU All Engines (2013 Emissions) Fault Code: P06B400 PID: ACM Sensor Power Supply “B”

VOLVOUU All Engines (2013 Emissions) Fault Code: P06B400 PID: ACM Sensor Power Supply “B”

Circuit description
The control module provides the following sensors with 5V supply voltage
A138, Aftertreatment DEF Dosing Pressure
If an abnormal voltage or current is detected on the common supply a DTC is set

Conditions for diagnostic trouble code (DTC)
The voltage at pin A137:51 is less than 4.5?V

Observable symptoms
None

Probable cause
1) Wiring harness
2) Connector
3) Aftertreatment DEF Dosing Pressure Sensor