DTC 21/22: Left Front/Right Front Wheel Speed Equals Zero Or Unreasonable & DTC 32/33: Left Front/Right Front Wheel Speed Sensor Circuit Open Or Shorted: Description

For DTCs 21 and 22, test determines malfunction is present when left or right front wheel speed is zero MPH, and reference speed is greater than 5 MPH. For DTCs 32 and 33, test detects left or right front wheel speed sensor circuit is open or shorted to ground or battery voltage.