C1142 – OBD-II DTC

OBD-II DTC C1142 – Wheel Speed Sensor RF Tone Ring Tooth Missing Fault

DTC C1142 meaning

DTC C1142 refers to a fault in the wheel speed sensor system, specifically indicating that there is a missing tooth on the tone ring of the right front wheel speed sensor. The tone ring is a component that works in conjunction with the wheel speed sensor to provide accurate speed readings to the vehicle’s control modules. When a tooth is missing, it can disrupt the sensor’s ability to read the wheel’s speed, leading to potential issues with traction control, anti-lock braking systems, and overall vehicle stability.

DTC C1142 symptoms

Common symptoms associated with DTC C1142 may include:

• Illumination of the ABS warning light on the dashboard
• Inconsistent or erratic ABS operation
• Loss of traction control functionality
• Unusual braking behavior, such as locking up or skidding
• Diagnostic trouble code stored in the vehicle’s computer

DTC C1142 causes

Several factors can lead to the occurrence of DTC C1142, including:

• Physical damage to the tone ring, such as cracks or breaks
• Corrosion or debris buildup on the tone ring or sensor
• Improper installation of the tone ring
• Faulty wheel speed sensor
• Wiring issues, such as shorts or open circuits in the sensor harness

DTC C1142 seriousness

DTC C1142 is considered a serious issue as it can affect the vehicle’s braking and stability control systems. If left unaddressed, it may lead to compromised safety while driving, especially in adverse conditions. It is crucial to diagnose and repair this fault promptly to ensure the vehicle operates safely and effectively.

How to diagnose DTC C1142

To diagnose DTC C1142, follow these steps:

• Use an OBD-II scanner to confirm the presence of DTC C1142.
• Inspect the right front wheel speed sensor and tone ring for visible damage or debris.
• Check the wiring and connectors for any signs of wear, corrosion, or disconnection.
• Test the wheel speed sensor’s resistance and output signal using a multimeter.
• Examine the vehicle’s service history for any previous repairs related to the ABS or wheel speed sensor.

How to fix DTC C1142 step-by-step instructions

To fix DTC C1142, follow these step-by-step instructions:

1. Ensure the vehicle is safely lifted and secured on jack stands.
2. Remove the right front wheel to access the wheel speed sensor and tone ring.
3. Inspect the tone ring for any missing teeth or physical damage replace if necessary.
4. Clean any debris or corrosion from the tone ring and sensor area.
5. Check the wheel speed sensor for proper operation
   

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