Volvo All Engines (2017 Emissions) Fault Code: P056085 PID: ACM System Voltage

Volvo All Engines (2017 Emissions) Fault Code: P056085 PID: ACM System Voltage

Circuit description
Battery voltage is monitored by the circuits within the Engine Control Module (ECM).

Conditions for diagnostic trouble code (DTC)
The voltage is more than 15V

Probable cause
1) Battery charger connected
2) Alternator