C1264 – OBD-II DTC

OBD-II DTC C1264 – Lamp Warning Relay Circuit Short To Battery

DTC C1264 meaning

DTC C1264 refers to a diagnostic trouble code indicating a short circuit in the lamp warning relay circuit, which is connected directly to the battery. This code is typically associated with issues in the vehicle’s electrical system, particularly affecting the warning lamps that alert the driver to various conditions or malfunctions.

DTC C1264 symptoms

Common symptoms associated with DTC C1264 may include:

• Illuminated warning lights on the dashboard
• Inconsistent operation of warning lamps
• Possible failure of other electrical components
• Increased battery drain

DTC C1264 causes

The causes of DTC C1264 can vary, but typical reasons include:

• Short circuit in the lamp warning relay circuit
• Faulty lamp warning relay
• Damaged wiring or connectors
• Corrosion in electrical connections
• Issues with the vehicle’s body control module (BCM)

DTC C1264 seriousness

DTC C1264 is considered a moderate to serious issue. While it may not immediately affect the drivability of the vehicle, it can lead to significant electrical problems if not addressed. Ignoring this code may result in malfunctioning warning lights, which can prevent the driver from being alerted to critical vehicle issues.

How to diagnose DTC C1264

To diagnose DTC C1264, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1264 code.
2. Inspect the lamp warning relay and its circuit for visible damage or corrosion.
3. Check the wiring and connectors for shorts or breaks.
4. Test the lamp warning relay for proper operation using a multimeter.
5. Examine the body control module for faults or software issues.

How to fix DTC C1264 step-by-step instructions

To fix DTC C1264, 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 lamp warning relay circuit.
3. Replace the lamp warning relay if it is found to be faulty.
4. Clean any corrosion from electrical connections to ensure good conductivity.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the system to ensure that the warning lamps operate correctly.

How to erase DTC C1264

To erase DTC C1264, 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 option to clear or erase trouble codes on the scanner.
4. Confirm the action to erase the DTC.
5. Disconnect the scanner and start the vehicle to check if the code returns.

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