C1190 – OBD-II DTC

OBD-II DTC C1190 – Speed Wheel Sensor LF Input Short Circuit To Battery

DTC C1190 meaning

DTC C1190 refers to a diagnostic trouble code indicating a short circuit in the left front speed wheel sensor input to the vehicle’s control module. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various components and systems within the vehicle. The left front speed wheel sensor is responsible for providing the vehicle’s control module with information about the wheel’s speed, which is crucial for functions such as anti-lock braking systems (ABS) and traction control.

DTC C1190 symptoms

Common symptoms associated with DTC C1190 may include:

• Illumination of the ABS warning light on the dashboard
• Inconsistent or erratic ABS operation
• Loss of traction control functionality
• Potential changes in braking performance
• Diagnostic scanner may show the C1190 code along with other related codes

DTC C1190 causes

Several factors can lead to the occurrence of DTC C1190, including:

• Faulty left front speed wheel sensor
• Damaged wiring or connectors related to the speed sensor
• Corrosion or poor connections at the sensor or control module
• Short circuit in the sensor circuit
• Issues with the vehicle’s control module

DTC C1190 seriousness

DTC C1190 is considered a serious issue as it affects the vehicle’s braking system and overall safety. 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 stability and increased stopping distances, especially in adverse conditions. Therefore, it is essential to address this code promptly to ensure safe vehicle operation.

How to diagnose DTC C1190

To diagnose DTC C1190, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1190 code.
2. Inspect the left front speed wheel sensor for physical damage or wear.
3. Check the wiring and connectors for signs of corrosion, fraying, or disconnection.
4. Test the resistance of the speed sensor using a multimeter to ensure it is within specifications.
5. Examine the vehicle’s control module for any related fault codes or issues.
6. Perform a visual inspection of the entire circuit for shorts to battery voltage.

How to fix DTC C1190 step-by-step instructions

To fix DTC C1190, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair or replace the left front speed wheel sensor if it is found to be faulty.
3. Repair any damaged wiring or connectors associated with the speed sensor.
4. Ensure all connections are clean and secure, eliminating any corrosion.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the ABS and traction control systems are functioning correctly and that the C1190 code does not reappear.

How to erase DTC C1190

To erase DTC C1190, 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 DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to verify that the code has been cleared.