what does code C1234 mean on my Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Ensure the vehicle is parked on a flat surface and securely lifted.

2. Inspect Wheel Speed Sensors

• Locate the wheel speed sensors on each wheel hub.
• Remove any debris or dirt from the sensor area.
• Disconnect the electrical connector from the sensor.
• Check the sensor’s mounting points to ensure they are secure.

3. Test Wheel Speed Sensors

• Use a multimeter to measure the resistance of each wheel speed sensor.
  • Specification: Typically, the resistance should be between 800 to 1200 ohms (check the specific manual for exact values).
• If resistance is outside specifications, replace the sensor.

4. Repair or Replace Damaged Components

• If any wiring is damaged, repair the wiring using appropriate electrical connectors and insulation.
• Replace any faulty wheel speed sensors as needed.
• Reconnect all electrical connectors securely.

5. Reassemble and Test

• Reinstall any components removed during inspection.
• Reconnect the negative battery terminal.
• Clear the DTC using the OBD-II scanner and conduct a test drive to ensure the issue is resolved.