Faulty Camshaft Position (CMP) Sensor
Camshaft Position Sensor harness is open or shorted
Camshaft Position Sensor circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
CMP Actuator Performance Problem Or Signal Out Of Range is the generic description for the P1671 Volvo code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1671 Volvo OBDII code.