how to resolve code C1201 in my Genesis G70 IG (2017-2023)

Learn how to diagnose and resolve C1201 ABS issue in Genesis G70 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the ignition is off.
• Disconnect the battery negative terminal to prevent electrical shorts.

2. Inspect ABS Wheel Speed Sensors

• Tools Required: Socket set, multimeter
• Remove the wheel corresponding to the affected ABS sensor.
• Locate the ABS wheel speed sensor and disconnect the electrical connector.
• Inspect the sensor for damage or corrosion.
• Use a multimeter to test the sensor's resistance; replace if it is out of specifications (typically around 1,000 Ohms).

3. Check ABS Module Connections

• Reconnect the battery terminal and turn the ignition to the "ON" position (but do not start the engine).
• Use a multimeter to measure voltage at the ABS module connector; ensure it receives proper power (typically around 12V).
• Check the ground connection for continuity; repair or clean any corroded connections.

4. Inspect Brake Fluid and Lines

• Check the brake fluid reservoir; ensure it is filled to the recommended level.
• Look for any visible leaks in the brake lines or at the brake calipers.
• If leaks are found, repair or replace the affected components.

5. Clear Codes and Test Drive

• Use the OBD-II scanner to clear the DTC C1201.
• Take the vehicle for a test drive to monitor the operation of the ABS system and check if the warning lights return.