how to troubleshoot Ford F-150 Fourteenth Generation (2021-present) C1201 code

Learn how to troubleshoot and fix C1201 code related to ABS in Ford F-150 (2021-present). Step-by-step guide with diagnostic and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure with wheel chocks.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect ABS Control Module Connections

• Reconnect the battery terminal.
• Locate the ABS control module, typically found near the brake master cylinder.
• Visually inspect the wiring harness and connectors for signs of corrosion or damage.
• Clean any corroded connections with electrical contact cleaner and ensure all connections are secure.

3. Test ABS Wheel Speed Sensors

• Locate each wheel speed sensor, usually mounted near the brake rotor.
• Disconnect the wiring harness from each sensor.
• Use a multimeter to measure the resistance of each sensor; values should typically be between 800 to 1,200 ohms.
• Replace any sensor that does not meet specifications.

4. Replace ABS Control Module (if necessary)

• If the ABS control module tests faulty, proceed with replacement.
• Unplug the wiring harness from the ABS control module.
• Remove the mounting bolts securing the module using a socket set.
• Install the new ABS control module by reversing the removal steps and ensuring secure connections.

5. Clear Codes and Test Drive

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear any stored codes.
• Test drive the vehicle to ensure that the ABS and traction control lights do not reappear and that braking performance is restored.