Possible Causes

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

Wiring, terminals or connectors
Tire pressure
Incorrect or mismatched tire
Wheel bearing
Wheel speed sensor encoder
Wheel speed sensor
ABS module

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector

Fig 1: Antilock Braking System (ABS) Module Connector End View (C135)

Courtesy of FORD MOTOR CO.

Harness Side

Circuit

Fig 2: Left Front Wheel Speed Sensor Connector End View (C150)

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
LF WSS HI (Left Front Wheel Speed Sensor High) - VCA03	1 (VIOLET/WHITE)
LF WSS LO (Left Front Wheel Speed Sensor Low) - RCA17	2 (YELLOW)

Fig 3: Right Front Wheel Speed Sensor Connector End View (C160)

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
RF WSS HI (Right Front Wheel Speed Sensor HI) - VCA05	1 (GRAY/VIOLET)
RF WSS LO (Right Front Wheel Speed Sensor Low) - RCA19	2 (VIOLET)

Fig 4: Left Rear Wheel Speed Sensor Connector End View (C440)

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
LR WSS HI (Left Rear Wheel Speed Sensor High) - VCA04	1 (BLUE/ORANGE)
LR WSS LO (Left Rear Wheel Speed Sensor Low) - RCA18	2 (BROWN/GREEN)

Fig 5: Right Rear Wheel Speed Sensor Connector End View (C426)

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
RR WSS HI (Right Rear Wheel Speed Sensor High) - VCA06	1 (WHITE/ORANGE)
RR WSS LO (Right Rear Wheel Speed Sensor Low) - RCA20	2 (BROWN)