Ford P1891 OBD-II Trouble Code Definition: P1891 Throttle Position Sensor PWM Signal Low P1891 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P1891 Throttle Position Sensor PWM Signal Low Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. OBD Trouble Code P1891 Automatic Transaxle Concerns Sorry no other information,Please help us to improve,Any information is […]