how to fix the C1234 code in my Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to prevent any electrical short circuits.
• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, and wire harness repair kit if needed.

2. Inspect and Replace Wheel Speed Sensor

1. Locate the Wheel Speed Sensor:

   • Identify and locate the wheel speed sensors at each wheel hub.

2. Remove the Wheel:

   • Loosen lug nuts, lift the vehicle with a jack, and remove the wheel.

3. Disconnect the Sensor:

   • Carefully disconnect the electrical connector from the wheel speed sensor.

4. Remove the Sensor:

   • Unscrew the mounting bolt(s) holding the sensor in place using the appropriate socket size.

5. Install the New Sensor:

   • Position the new wheel speed sensor in place and secure it with the mounting bolt(s). Torque to manufacturer specifications (typically around 10-15 ft-lbs).

6. Reconnect the Electrical Connector:

   • Plug the electrical connector back into the new sensor ensuring a secure fit.

3. Reassemble

• Reinstall the wheel and torque the lug nuts to the manufacturer’s specifications (usually around 100-150 ft-lbs).
• Reconnect the battery.

4. Road Test

• Start the vehicle and perform a road test to ensure that the ABS and traction control systems are functioning correctly.