AutoCodes – Nissan – B2401 Nissan

B2401 Nissan Code - Automatic Back Door Ignition Power Supply Circuit

Quick Answer

The Body Control Module (BCM) monitors the Automatic Back Door Ignition Power Supply Circuit. Common causes include Faulty Automatic Back Door Control Module, Automatic Back Door Control Module harness is open or shorted, Automatic Back Door Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2401 Nissan indicates Automatic Back Door Ignition Power Supply Circuit.
Common causes: Common causes include Faulty Automatic Back Door Control Module, Automatic Back Door Control Module harness is open or shorted, Automatic Back Door Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,453

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2401 Nissan Description

The Body Control Module (BCM) monitors the Automatic Back Door Ignition Power Supply Circuit. The BCM sets the OBDII code when the Automatic Back Door Control Module cannot detect ignition switch ON signal via CAN communication with BCM.

OBDII Code B2401 Nissan - Automatic Back Door Ignition Power Supply Circuit - AutoCodes.com — B2401 Nissan Code - Automatic Back Door Ignition Power Supply Circuit

What does this mean?

What are the Possible Causes of the DTC B2401 Nissan?

Faulty Automatic Back Door Control Module
Automatic Back Door Control Module harness is open or shorted
Automatic Back Door Control Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2401 Nissan?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2401 Nissan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B2401 Nissan code?

Need more information on how to fix the B2401 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2401 Nissan code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2401 Nissan Code

1. What does the OBDII code B2401 indicate on a Nissan?

- Code B2401 indicates a fault in the Automatic Back Door Ignition Power Supply Circuit, suggesting that there is an issue with the electrical circuit providing power to the automatic back door system when the ignition is on.

2. What are common symptoms of code B2401 in a Nissan?

- Common symptoms include the automatic back door not opening or closing properly, intermittent operation of the back door, or complete failure of the back door function.

3. What can cause code B2401 to appear in a Nissan?

- Potential causes include a blown fuse, faulty back door control module, damaged wiring or connectors in the back door circuit, or issues with the ignition switch providing inconsistent power to the back door system.

4. How can I diagnose and confirm the presence of code B2401 in my Nissan?

- To diagnose this issue, use an OBDII scanner to confirm the code, check the fuse related to the back door system, inspect all wiring and connectors for damage or corrosion, and test the voltage in the back door circuit to ensure proper power supply.

5. What are the steps to fix the B2401 code in a Nissan?

- Repair steps may include replacing any blown fuses, repairing or replacing damaged wires or connectors, replacing a faulty back door control module, or fixing any issues with the ignition switch circuit.

6. Is it safe to drive a Nissan with the B2401 code active?

- While it may be safe to drive, the functionality of the automatic back door will be compromised, which could be inconvenient and interfere with access to the vehicleâ€™s cargo area. Itâ€™s best to address the issue promptly.

7. Will the B2401 code clear on its own after repairs are made?

- After the necessary repairs are made, the code should be manually cleared using an OBDII scanner. If the repair was successful, the code should not return.

8. What tools are required to diagnose the B2401 code in a Nissan?

- Tools needed include an OBDII scanner to read the code, a multimeter for electrical testing, and basic hand tools to access the fuse and wiring.

9. Can a faulty battery cause the B2401 code in a Nissan?

- While a faulty battery itself is unlikely to directly cause this code, a weak or inconsistent power supply due to battery issues could contribute to the problem, especially if it affects the ignition systemâ€™s voltage.