Volvo All Engines (2017 Emissions) Fault Code: P103400 PID: EMS Particulate Matter Sensor System Voltage Too High

Volvo All Engines (2017 Emissions) Fault Code: P103400 PID: EMS Particulate Matter Sensor System Voltage Too High

Circuit description
The aftertreatment particulate sensor measures the amount of particulates in the exhaust system. The aftertreatment particulate sensor is connected to the DL7 data link. The Diagnostic Trouble Code (DTC) indicates an aftertreatment particulate sensor supply failure. For example: Aftertreatment particulate sensor voltage too low, or voltage too high

Conditions for diagnostic trouble code (DTC)
Aftertreatment particulate sensor, System voltage high

Probable cause
1) Short circuit Wiring harness
2) Defective alternator