Volvo All Engines (2017 Emissions) Fault Code: P112C73 PID: EMS Engine Rear Start Switch “A” Circuit Range/Performance

Volvo All Engines (2017 Emissions) Fault Code: P112C73 PID: EMS Engine Rear Start Switch “A” Circuit Range/Performance

Conditions for diagnostic trouble code (DTC)
The function is monitored by the diagnostic system when the vehicle is being driven
Electronic control unit (ECU) connector A14.EA:55 monitors the function

Observable symptoms
Switch Stuck in closed position

Probable cause
1) Connector
2) Wiring harness
3) Open circuit electric cables
4) Engine Rear Start Switch