how to fix C1241 error code in my Toyota Corolla E210 (2019-2024)

Learn how to diagnose and fix C1241 ABS malfunction in Toyota Corolla E210 (2019-2024). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, screwdrivers, and a brake fluid tester.
• Ensure the vehicle is parked on a flat surface and the ignition is off.
• Disconnect the battery to prevent any electrical shorts.

2. Inspect Wheel Speed Sensors

• 1.1 Locate the wheel speed sensors on each wheel hub.
• 1.2 Remove any protective covers or mounting bolts as necessary using a socket set.
• 1.3 Visually inspect the sensors for physical damage or debris.
• 1.4 Clean the sensor surfaces using a soft cloth and brake cleaner if debris is present.
• 1.5 Reconnect any connectors and ensure they are secure before reassembling.

3. Check Wiring and Connections

• 3.1 Trace the wiring harness from the ABS module to the wheel speed sensors.
• 3.2 Look for frayed wires, corrosion, or loose connections.
• 3.3 Use a multimeter to check for continuity in the wiring between the ABS module and the sensors.
• 3.4 Repair or replace any damaged wiring or connectors as necessary.

4. Test Wheel Speed Sensors

• 4.1 Use a multimeter to measure the resistance of each wheel speed sensor (typically should be between 1,000 to 2,500 ohms).
• 4.2 If any sensor falls outside this range, replace the sensor with a new one.

5. Reassemble and Reconnect

• 5.1 Reinstall any removed components or covers.
• 5.2 Reconnect the battery and ensure all connections are tight.
• 5.3 Clear the error codes using the OBD-II scanner.