B1310 – OBD-II DTC

OBD-II DTC B1310 – Power Door Unlock Circuit Failure

DTC B1310 meaning

DTC B1310 refers to a diagnostic trouble code indicating a failure in the power door unlock circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle functions. When the power door unlock circuit fails, it can prevent the doors from unlocking properly, affecting vehicle access and security.

DTC B1310 symptoms

Common symptoms associated with DTC B1310 may include:

• Doors not unlocking with the remote or switch
• Inconsistent door locking/unlocking behavior
• Warning lights on the dashboard related to the door locks
• Manual unlocking required for doors

DTC B1310 causes

Several factors can lead to the occurrence of DTC B1310, including:

• Faulty door lock actuator
• Wiring issues, such as shorts or open circuits
• Defective power door lock switch
• Malfunctioning body control module (BCM)
• Corrosion or poor connections in the circuit

DTC B1310 seriousness

The seriousness of DTC B1310 can vary based on the vehicle’s use and the specific symptoms present. While it may not immediately affect the vehicle’s drivability, it can compromise security and convenience. It is advisable to address this issue promptly to ensure proper functionality of the door locking system.

How to diagnose DTC B1310

To diagnose DTC B1310, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1310 code.
2. Inspect the door lock actuator for any visible damage or malfunction.
3. Check the wiring and connectors for signs of wear, corrosion, or disconnection.
4. Test the power door lock switch for proper operation.
5. Examine the body control module for faults or error codes.
6. Perform continuity tests on the circuit to identify any breaks or shorts.

How to fix DTC B1310 step-by-step instructions

To fix DTC B1310, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and repair any damaged wiring or connectors in the power door unlock circuit.
3. Replace the faulty door lock actuator if necessary.
4. Test and replace the power door lock switch if it is not functioning correctly.
5. Check the body control module for updates or replacements if it is malfunctioning.
6. Recheck the system to ensure the DTC does not return.

How to erase DTC B1310

To erase DTC B1310, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the diagnostic menu on the scanner and select the option to clear or erase 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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