B1301 Code Meaning, Symptoms, Causes and How to Fix

The B1301 code indicates an open circuit in the Power Door Lock system, as detected by the Body Control Module (BCM).

Symptoms of this issue may include the inability to lock or unlock the doors using the power locks, or a malfunctioning door lock button.

There are several potential causes for this code, including damaged wiring, a faulty actuator, or a malfunctioning BCM.

To fix the problem, it is recommended to start by inspecting the wiring and connectors for any damage or loose connections. If no issues are found, further diagnosis may be needed using a diagnostic tool to pinpoint the exact cause.

Once the cause is determined, the necessary repairs or replacements can be made to resolve the open circuit and restore proper functionality to the Power Door Lock system.

It is advised to consult a professional technician for accurate diagnosis and to assess the cost of repairs.

What does it mean

The B1301 code indicates an open circuit in the Power Door Lock system. This means there is an electrical connection problem preventing proper locking or unlocking of doors. It's important to note that the code can be caused by issues with wiring, connectors, or the Body Control Module (BCM), not necessarily the lock itself. Regular inspections and prompt attention to related symptoms are recommended to prevent future occurrences.

Additional details:

The B1301 code is a diagnostic trouble code (DTC) that is stored when the Body Control Module (BCM) detects an open circuit in the Power Door Lock system. This open circuit could be caused by a faulty wiring harness, damaged connectors, or an issue with the BCM itself. It is important to note that the code does not necessarily mean that the Power Door Lock itself is faulty. It is often triggered by an issue in the electrical connection, rather than a physical problem with the lock mechanism.

To prevent future occurrences of the B1301 code, it is recommended to regularly inspect the wiring harness and connectors for any signs of damage, such as frayed wires or corroded connectors. It is also important to address any symptoms or issues related to the Power Door Lock system promptly. This could include doors not locking or unlocking properly, intermittent operation of the locks, or abnormal sounds or vibrations when operating the locks. By addressing these issues early on, it is possible to prevent further damage to the Power Door Lock system and avoid triggering the B1301 code in the future.

what are the symptoms

The symptoms of the B1301 code can vary depending on the vehicle. Some common symptoms include:

1. Engine Light ON: The code may cause the engine light on the dashboard to come on. This indicates a problem with the Power Door Lock system.
2. Power Door Lock Malfunction: The power door lock system may not work properly. This can cause issues with locking or unlocking the doors of the vehicle.
3. Unusual Door Lock Behavior: The doors may lock or unlock unexpectedly or intermittently. This can be inconvenient and may raise security concerns.

It is important to address these symptoms promptly to prevent further damage. Ignoring the B1301 code can lead to continued problems with the power door lock system or potential security issues.

It is recommended to seek professional assistance for accurate diagnosis and repair.

Whate are the causes

Possible causes of the B1301 code include:

• A faulty power door lock
• A problem with the power door lock wiring
• A poor electrical connection in the power door lock circuit
• A faulty Body Control Module (BCM)
• Other potential causes

When diagnosing the B1301 code, it is important to avoid common diagnostic mistakes and address symptoms promptly to prevent further damage.

Here are three common diagnostic mistakes to avoid when dealing with the B1301 code:

1. Not checking the wiring and connectors:

• Sometimes, the issue can be caused by damaged components or problems with the connectors.
• It is important to visually inspect the wiring and connectors to look for any visible signs of damage.

1. Neglecting necessary repairs or replacements:

• Once the issue has been identified, it is crucial to perform the necessary repairs or replacements based on the findings.
• Ignoring or delaying the required repairs can lead to further complications and potential damage to the vehicle.

1. Not seeking professional advice for accurate pricing:

• The cost to diagnose and fix the B1301 code can vary depending on factors such as location, make, model, and engine type.
• It is advisable to consult a professional to get accurate pricing information and avoid any surprises.

What Tools are Needed to diagnose

In order to diagnose the B1301 code, you will need specific tools. Here are some recommended practices and techniques for diagnosing the B1301 code:

1. OBD-II Scanner: An OBD-II scanner is necessary to retrieve the B1301 code and other diagnostic trouble codes (DTCs). This scanner allows technicians to access the vehicle's onboard computer system and gather important data.
2. Digital Multimeter: A digital multimeter is used to measure voltage, resistance, and continuity in the power door lock circuit. This tool helps identify any issues with open or short circuits, as well as poor electrical connections.
3. Visual Inspection Tools: Visual inspection tools, such as a flashlight and mirror, are needed to visually inspect the power door lock harness, connectors, and related wiring. Technicians should look for any signs of damage, corrosion, or loose connections.

How to fix Step by Step

Step 1: Visually inspect the wiring harness and connectors related to the B1301 code for any damage or corrosion.

Step 2: Check for broken, bent, pushed out, or corroded connector pins during the inspection.

Step 3: Perform necessary repairs or replacements based on the findings of the inspection.

Step 4: Refer to a step-by-step guide on repairing the Power Door Lock system to resolve the B1301 code.

Step 5: Follow the guide to check for open or shorted circuits in the Power Door Lock system.

Step 6: Test the power door lock switch and actuator according to the guide.

Step 7: Verify the operation of the Body Control Module (BCM) as outlined in the guide.

Step 8: Address any identified issues during the steps above.

What are the Common Diagnosis Mistakes

Common mistakes in diagnosing the B1301 code include not checking for other possible causes and not accurately identifying symptoms. To prevent these mistakes, it is important to use common troubleshooting techniques.

Here are three important techniques to consider:

1. Carefully check the wiring harness and connectors related to the power door lock system. Look for any signs of damage like frayed wires or corroded connectors. Make sure all connector pins are intact and properly connected.
2. Visually inspect the power door lock components. Look for any broken, bent, pushed out, or corroded parts that could affect the system's operation.
3. Seek help from a professional to accurately identify symptoms. The B1301 code may come with other symptoms that can provide useful clues to the underlying issue. Addressing these symptoms promptly can prevent further damage and help with accurate diagnosis.

What is the Repair Cost

The repair cost for DTC B1301 can vary depending on factors like location, vehicle make, model, and engine type. Labor rates range between $75 and $150 per hour. It is important to consult a professional for accurate pricing.

Ignoring the issue can lead to further damage and costlier repairs. Promptly addressing symptoms and seeking professional diagnosis and repair is crucial.

Can I drive safely with this code?

Driving safely with the B1301 code is crucial to prevent further damage to the Power Door Lock system.

While possible, it is recommended to address the issue promptly to avoid safety concerns.

Diagnose the code by checking wiring and connectors for damage, and consult a professional for accurate repair procedures.

Conclusion

In conclusion, the B1301 code indicates an open circuit within the Power Door Lock system, as detected by the Body Control Module. This can be caused by a faulty Power Door Lock, open or shorted wiring harness, or poor electrical connections.

Promptly addressing symptoms such as the Engine Light being ON is important to prevent further damage. Professional consultation is recommended for accurate diagnosis and repair, and the cost will depend on the specific findings and required repairs.