C1193 – OBD-II DTC

OBD-II DTC C1193 – Speed Wheel Sensor RF Input Short Circuit To Ground

DTC C1193 meaning

DTC C1193 refers to a diagnostic trouble code indicating a short circuit to ground in the right front speed wheel sensor input. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components to ensure proper operation. The speed wheel sensor is crucial for the vehicle’s anti-lock braking system (ABS) and traction control system, as it provides real-time data about the wheel’s speed.

DTC C1193 symptoms

Common symptoms associated with DTC C1193 may include:

• Illumination of the ABS warning light on the dashboard
• Loss of ABS functionality
• Increased stopping distances
• Unusual behavior of the traction control system
• Potential activation of the brake warning light

DTC C1193 causes

Several factors can lead to the occurrence of DTC C1193, including:

• Faulty right front speed wheel sensor
• Damaged wiring or connectors related to the speed sensor
• Corrosion or dirt affecting the sensor’s electrical connections
• Issues with the ABS control module
• Short circuit in the wiring harness

DTC C1193 seriousness

DTC C1193 is considered a serious issue as it directly affects the vehicle’s braking system. The ABS and traction control systems rely on accurate wheel speed data to function correctly. If these systems are compromised, it can lead to decreased vehicle control, especially in slippery conditions, increasing the risk of accidents.

How to diagnose DTC C1193

To diagnose DTC C1193, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1193 code.
2. Inspect the right front speed wheel sensor for physical damage or disconnection.
3. Check the wiring and connectors for signs of wear, corrosion, or short circuits.
4. Test the resistance and voltage of the speed sensor using a multimeter.
5. Examine the ABS control module for any faults or error codes.
6. Clear the code and perform a road test to see if the code reappears.

How to fix DTC C1193 step-by-step instructions

To fix DTC C1193, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and replace the right front speed wheel sensor if it is faulty.
3. Repair or replace any damaged wiring or connectors associated with the speed sensor.
4. Clean any corrosion or dirt from the sensor’s electrical connections.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Perform a road test to verify that the ABS and traction control systems are functioning correctly and that the code does not reappear.

How to erase DTC C1193

To erase DTC C1193, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear Codes” option on the scanner.
4. Confirm the action to clear the DTC from the vehicle’s memory.
5. Disconnect the scanner and perform a test drive to ensure the code does not return.

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