C1242 – OBD-II DTC

OBD-II DTC C1242 – ABS Outlet Valve Coil LR Circuit Failure

DTC C1242 meaning

DTC C1242 refers to a fault in the ABS (Anti-lock Braking System) related to the outlet valve coil for the left rear wheel. This code indicates that the ABS control module has detected a malfunction in the electrical circuit associated with the outlet valve coil, which is responsible for controlling brake fluid flow to the left rear brake. A failure in this circuit can lead to improper ABS operation, affecting vehicle safety and braking performance.

DTC C1242 symptoms

Common symptoms associated with DTC C1242 may include:

• Illumination of the ABS warning light on the dashboard
• Loss of ABS functionality, leading to potential wheel lock-up during hard braking
• Increased stopping distances
• Unusual noises from the ABS module during operation

DTC C1242 causes

Several factors can contribute to the occurrence of DTC C1242, including:

• Faulty outlet valve coil for the left rear wheel
• Damaged or corroded wiring in the ABS circuit
• Defective ABS control module
• Poor electrical connections or loose terminals
• Moisture intrusion or contamination in the ABS components

DTC C1242 seriousness

DTC C1242 is considered a serious issue as it directly impacts the vehicle’s braking system. The malfunction of the ABS can lead to:

• Increased risk of skidding or loss of control during emergency braking
• Potential for accidents due to compromised braking performance
• Inability to rely on ABS functionality, especially in slippery conditions

How to diagnose DTC C1242

To diagnose DTC C1242, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC C1242.
2. Inspect the ABS wiring and connectors for any visible damage or corrosion.
3. Check the outlet valve coil for continuity and resistance using a multimeter.
4. Test the ABS control module for proper operation and any additional stored codes.
5. Perform a visual inspection of the brake system components for any signs of wear or damage.

How to fix DTC C1242 step-by-step instructions

To fix DTC C1242, 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 any damaged wiring or connectors in the ABS circuit.
3. Replace the faulty outlet valve coil if testing indicates it is defective.
4. Reconnect any loose or corroded electrical connections.
5. Reinstall the ABS control module if it was removed for testing.
6. Reconnect the vehicle’s battery and clear the DTC using an OBD-II scanner.
7. Test drive the vehicle to ensure the ABS system is functioning correctly and the DTC does not reappear.

How to erase DTC C1242

To erase DTC C1242, 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 stored DTCs.
5. Disconnect the scanner and start the vehicle to verify that the DTC has been cleared.

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