C0238 Buick Wheel Speed Mismatch
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
– Front or Rear Speed Sensor harness is open or shorted
– Front or Rear Speed Sensor circuit poor electrical connection
– Faulty EBCM
Symptoms
– ABS Warning Light ON
C0238 Buick OBD Code 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.
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera