Wheel Sensor Inspection

Clean the encoder, and make sure no metal or other debris is stuck to the encoder surface.
Check the magnetic encoder (A) for damage. If cracked or damaged, replace the encoder.

Fig 1: Checking Magnetic Encoder For Damage
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the air gap between the wheel sensor (B) and the magnetic encoder while rotating the encoder.
Standard:
- Front: 0.25-1.52 mm (0.01-0.06 in.)
- Rear: 0.51-1.27 mm (0.02-0.05 in.)