C1268 – OBD-II DTC

OBD-II DTC C1268 – Motor Relay # 1 Circuit Failure

DTC C1268 meaning

DTC C1268 refers to a fault in the Motor Relay # 1 circuit within the vehicle’s electronic control system. This diagnostic trouble code indicates that the powertrain control module (PCM) has detected an issue with the relay responsible for controlling various motor functions, such as those related to the anti-lock braking system (ABS) or traction control. The failure of this relay can lead to a loss of functionality in these systems, potentially affecting vehicle safety and performance.

DTC C1268 symptoms

Common symptoms associated with DTC C1268 may include:

• Illumination of the check engine light or ABS warning light
• Loss of ABS functionality
• Traction control system malfunctions
• Unresponsive or erratic braking behavior
• Increased stopping distances

DTC C1268 causes

Several factors can contribute to the occurrence of DTC C1268, including:

• Faulty motor relay # 1
• Wiring issues, such as shorts or open circuits in the relay circuit
• Corrosion or poor connections at the relay terminals
• Defective powertrain control module (PCM)
• Electrical interference or voltage irregularities

DTC C1268 seriousness

DTC C1268 is considered a serious issue as it can affect critical vehicle systems like ABS and traction control. If left unaddressed, it may lead to compromised vehicle safety, especially in adverse driving conditions. It is advisable to diagnose and repair this code promptly to ensure optimal vehicle performance and safety.

How to diagnose DTC C1268

To diagnose DTC C1268, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1268 code.
2. Inspect the motor relay # 1 for visible damage or wear.
3. Check the wiring and connectors associated with the relay for signs of corrosion or damage.
4. Test the relay operation using a multimeter to ensure it is functioning correctly.
5. Examine the PCM for any fault codes or issues that may be related.
6. Perform a continuity test on the relay circuit to identify any breaks or shorts.

How to fix DTC C1268 step-by-step instructions

To fix DTC C1268, follow these step-by-step instructions:

1. Replace the faulty motor relay # 1 if it is determined to be defective.
2. Repair or replace any damaged wiring or connectors in the relay circuit.
3. Clean any corrosion from the relay terminals and ensure secure connections.
4. Recheck the PCM for any additional fault codes and address them as necessary.
5. Clear the DTC using an OBD-II scanner and perform a test drive to verify the repair.
6. Monitor the vehicle for any recurrence of the C1268 code or related symptoms.

How to erase DTC C1268

To erase DTC C1268, 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. 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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