B1301 – OBD-II DTC

OBD-II DTC B1301 – Power Door Lock Circuit Open

DTC B1301 meaning

DTC B1301 refers to a diagnostic trouble code indicating an open circuit in the power door lock system. This code is generated when the vehicle’s onboard diagnostic system detects that the power door lock circuit is not functioning as expected, typically due to a break in the wiring or a malfunctioning component.

DTC B1301 symptoms

Common symptoms associated with DTC B1301 may include:

• Power door locks not functioning
• Inability to lock or unlock doors using the remote or switch
• Intermittent operation of door locks
• Warning lights on the dashboard related to the door lock system

DTC B1301 causes

Several factors can lead to the occurrence of DTC B1301, including:

• Damaged or frayed wiring in the power door lock circuit
• Faulty door lock actuator
• Defective door lock switch
• Corroded connectors or terminals
• Issues with the vehicle’s body control module (BCM)

DTC B1301 seriousness

DTC B1301 is considered a moderate issue. While it may not affect the vehicle’s drivability, it compromises the security and convenience features of the vehicle. Addressing this code promptly is important to ensure the proper functioning of the door lock system.

How to diagnose DTC B1301

To diagnose DTC B1301, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1301 code.
2. Inspect the wiring and connectors related to the power door lock circuit for any visible damage.
3. Test the door lock switch for proper operation.
4. Check the door lock actuator for functionality.
5. Examine the body control module for any faults or issues.
6. Clear the code and perform a test to see if it returns.

How to fix DTC B1301 step-by-step instructions

To fix DTC B1301, follow these steps:

1. Inspect and repair any damaged wiring or connectors in the power door lock circuit.
2. Replace the faulty door lock actuator if it is not functioning properly.
3. Replace the door lock switch if it is defective.
4. Ensure all connections are clean and free of corrosion.
5. Recheck the body control module for any issues and replace if necessary.
6. Clear the DTC using an OBD-II scanner and test the door locks to confirm the issue is resolved.

How to erase DTC B1301

To erase DTC B1301, 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 trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not return.

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