C0300 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0300 – Rear Propshaft Speed Sensor


C0300 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C0300 Possible Causes


Faulty Rear Propshaft Speed Sensor,Rear Propshaft Speed Sensor harness is open or shorted,Rear Propshaft Speed Sensor circuit poor electrical connection


C0300 Description


The rear propshaft speed sensor is a Permanent Magnet (PM) generator. The PM generator produces a pulsing AC voltage. The AC voltage level and number of pulses increases as speed increases. The module converts the pulsating AC voltage to a propshaft RPM which is used for calculations. The propshaft RPM can be displayed with a scan tool. This DTC detects an open, short to ground, short to voltage or faulty sensor.