C0221 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0221 – Right Front Speed Sensor or Circuit Open


C0221 Possible Symptoms


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


C0221 Possible Causes


Faulty Right Front Speed Sensor,Right Front Speed Sensor harness is open or shorted,Right Front Speed Sensor circuit poor electrical connection,Faulty EBCM


C0221 Description


As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.