C1221 through C1224

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Under the following conditions, 2 Wheel Speed Sensor Input is 0 DTCs are set:

The 2 suspect wheel speeds equal zero for 20 seconds.
The other wheel speeds are greater than 16 km/h (10 mph).
The other wheel speeds are within 11 km/h (7 mph) of each other.

Diagnose each wheel speed sensor individually.