C0238 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0238 – Wheel Speed Mismatch


C0238 Possible Symptoms


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


C0238 Possible Causes


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


C0238 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.