C1230 – OBD-II DTC

OBD-II DTC C1230 – Speed Wheel Sensor Rear Center Input Circuit Failure

DTC C1230 meaning

DTC C1230 refers to a diagnostic trouble code indicating a failure in the speed wheel sensor input circuit for the rear center wheel. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components to ensure proper functionality. The speed wheel sensor is crucial for providing accurate vehicle speed data to the anti-lock braking system (ABS) and traction control systems.

DTC C1230 symptoms

Common symptoms associated with DTC C1230 may include:

• Illumination of the ABS warning light on the dashboard
• Inconsistent or erratic ABS operation
• Loss of traction control functionality
• Increased stopping distances
• Potential activation of the brake warning light

DTC C1230 causes

Several factors can lead to the occurrence of DTC C1230, including:

• Faulty speed wheel sensor
• Damaged or corroded wiring in the sensor circuit
• Loose or poor electrical connections
• Faulty ABS control module
• Mechanical issues with the wheel hub or bearing

DTC C1230 seriousness

DTC C1230 is considered a serious issue as it affects the vehicle’s braking system. The ABS and traction control systems rely on accurate speed data to function correctly. If left unaddressed, this code can lead to compromised vehicle safety, especially in slippery conditions where traction control is essential.

How to diagnose DTC C1230

To diagnose DTC C1230, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1230 code.
2. Inspect the speed wheel sensor for physical damage or disconnection.
3. Check the wiring and connectors for signs of wear, corrosion, or loose connections.
4. Test the speed wheel sensor’s resistance and voltage output according to manufacturer specifications.
5. Examine the ABS control module for faults or error codes.
6. Perform a road test to observe the behavior of the ABS and traction control systems.

How to fix DTC C1230 step-by-step instructions

To fix DTC C1230, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and replace the speed wheel sensor if it is faulty.
3. Repair or replace any damaged wiring or connectors in the sensor circuit.
4. Ensure all electrical connections are secure and free of corrosion.
5. Test the ABS control module and replace it if necessary.
6. Recheck the system for any new codes after repairs.
7. Perform a road test to ensure the ABS and traction control systems are functioning correctly.

How to erase DTC C1230

To erase DTC C1230, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the scanner’s menu and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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