C1401 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C1401 – Front Speed Sensor Right Malfunction
C1401 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C1401 Possible Causes
Faulty Front Speed Sensor Right,Front Speed Sensor Right Rotor,Front Speed Sensor Right harness is open or shorted,Front Speed Sensor Right circuit poor electrical connection
The speed sensor detects the wheel speed and sends the appropriate signals to the Skid Control ECU. These signals are used for brake control. The speed sensor rotors have rows of alternating N and S magnetic poles and their magnetic fields change when the rotors turn. Each speed sensor detects that magnetic change and sends a pulse signal to the Skid Control ECU.