C1254 – OBD-II DTC

OBD-II DTC C1254 – ABS Inlet Valve Coil RR Circuit Failure

DTC C1254 meaning

DTC C1254 refers to a fault in the ABS (Anti-lock Braking System) related to the inlet valve coil for the right rear wheel. This code indicates that the ABS control module has detected a malfunction in the electrical circuit associated with the inlet valve coil, which is responsible for regulating brake fluid pressure during ABS operation. When this circuit fails, it can affect the overall performance of the ABS system, potentially leading to reduced braking efficiency.

DTC C1254 symptoms

Common symptoms associated with DTC C1254 may include:

• Illumination of the ABS warning light on the dashboard
• Inconsistent or erratic braking performance
• Increased stopping distances
• Potential activation of the traction control system warning light
• Unusual noises from the ABS module during braking

DTC C1254 causes

Several factors can lead to the occurrence of DTC C1254, including:

• Faulty inlet valve coil for the right rear wheel
• Damaged or corroded wiring in the ABS circuit
• Defective ABS control module
• Poor electrical connections or loose terminals
• Moisture or contamination in the ABS system

DTC C1254 seriousness

DTC C1254 is considered a serious issue as it directly impacts the functionality of the ABS system. If left unaddressed, it can lead to:

• Increased risk of skidding or loss of control during braking
• Potential for brake system failure
• Compromised vehicle safety

It is crucial to diagnose and repair this issue promptly to ensure safe vehicle operation.

How to diagnose DTC C1254

To diagnose DTC C1254, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1254 code.
2. Inspect the ABS wiring and connectors for any visible damage or corrosion.
3. Check the inlet valve coil for continuity and resistance using a multimeter.
4. Test the ABS control module for proper operation and any additional fault codes.
5. Perform a visual inspection of the ABS system for leaks or contamination.

How to fix DTC C1254 step-by-step instructions

To fix DTC C1254, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors in the ABS circuit.
3. If the inlet valve coil is faulty, replace it with a new component.
4. Reconnect the ABS control module and ensure all connections are secure.
5. Reconnect the vehicle’s battery.
6. Clear the DTC using an OBD-II scanner and perform a test drive to verify the repair.

How to erase DTC C1254

To erase DTC C1254, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the 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 stored codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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