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
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.