DTC Code C0245 – What does this code mean?

<ul> <li><b>Anti-Lock Brake System (ABS) Warning Light ON</b>: The ABS warning light illuminates when the system detects a malfunction in the wheel speed sensor. This can affect the vehicle's ability to manage braking effectively, especially in slippery conditions. <causes> may include a faulty wheel speed sensor, damaged wiring, or issues with the ABS control module.</li> <li><b>Engine Light ON (or Service Engine Soon Warning Light)</b>: The engine light or service engine soon warning light may turn on due to the wheel speed sensor frequency malfunction. This indicates a broader issue that could impact the vehicle's overall performance. <causes> may include sensor failure, electrical problems, or a malfunctioning ABS module.</li> </ul>

<ul><li>Mis-sized or non-matching brand tire can cause discrepancies in wheel speed readings.</li><li>A faulty Electronic Brake Control Module (EBCM) may fail to process wheel speed sensor signals correctly.</li><li>An open or shorted EBCM harness can disrupt communication between the sensor and the module.</li><li>Poor electrical connections in the EBCM circuit can lead to intermittent or incorrect sensor data transmission.</li></ul>

<ul> <li><b>Initial Inspection</b>: Visually inspect the wheel speed sensor and its wiring for any signs of damage, corrosion, or disconnection.</li> <li><b>Check Sensor Alignment</b>: Ensure the wheel speed sensor is properly aligned and securely mounted. Misalignment can cause incorrect readings.</li> <li><b>Measure Sensor Resistance</b>: Using a multimeter, measure the resistance of the wheel speed sensor. Compare the readings to the manufacturer's specifications.</li> <li><b>Inspect Tone Ring</b>: Check the tone ring (reluctor ring) for any damage, dirt, or debris that could interfere with the sensor's ability to read wheel speed accurately.</li> <li><b>Test Sensor Signal</b>: Connect an oscilloscope to the wheel speed sensor and spin the wheel. Observe the waveform to ensure it is consistent and within the expected frequency range.</li> <li><b>Check ABS Module</b>: Inspect the ABS control module for any signs of malfunction or error codes that could be related to the wheel speed sensor issue.</li> <li><b>Verify Power Supply</b>: Ensure the wheel speed sensor is receiving the correct voltage from the vehicle's electrical system. Check for any blown fuses or faulty connections.</li> <li><b>Road Test</b>: After performing the above checks and repairs, conduct a road test to verify that the wheel speed sensor is functioning correctly and the DTC code does not reappear.</li></ul>

<p>The DTC code C0245 indicates a Wheel Speed Sensor Frequency Malfunction. This issue can affect the ABS system, leading to compromised braking performance.</p><ul><li><b>Immediate Actions:</b> Inspect and possibly replace the wheel speed sensor.</li><li><b>Potential Risks:</b> Delayed repair can result in reduced braking efficiency, increasing the risk of accidents.</li></ul>