AutoCodes – Infiniti – B2420 Infiniti

B2420 Infiniti Code - Automatic Back Door Close Switch

Quick Answer

The Automatic Back Door Control Module monitors the Automatic Back Door Close Switch. Common causes include Faulty Close Switch, Close Switch harness is open or shorted, Close Switch 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: B2420 Infiniti indicates Automatic Back Door Close Switch.
Common causes: Common causes include Faulty Close Switch, Close Switch harness is open or shorted, Close Switch 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.

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Code Popularity 1,426

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
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Code B2420 Infiniti Description

The Automatic Back Door Control Module monitors the Automatic Back Door Close Switch. The OBDII code sets when the Automatic Back Door Control Module cannot detect a malfunction of the Close Switch during automatic operation of the back door.

OBDII Code B2420 Infiniti - Automatic Back Door Close Switch - AutoCodes.com — B2420 Infiniti Code - Automatic Back Door Close Switch

What does this mean?

What are the Possible Causes of the DTC B2420 Infiniti?

Faulty Close Switch
Close Switch harness is open or shorted
Close Switch circuit poor electrical connection
Faulty Automatic Back Door Control Module

How to Fix the DTC B2420 Infiniti?

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 B2420 Infiniti 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 B2420 Infiniti code?

Need more information on how to fix the B2420 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2420 Infiniti 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 B2420 Infiniti Code

1. What is OBDII code B2420 in Infiniti related to?

The OBDII code B2420 in Infiniti is related to the Automatic Back Door Close Switch.

2. What are common symptoms of OBDII code B2420 in an Infiniti?

Common symptoms of OBDII code B2420 in an Infiniti may include issues with the automatic back door not closing properly or failing to respond to the switch.

3. What causes OBDII code B2420 to trigger in an Infiniti?

OBDII code B2420 in an Infiniti is typically triggered by a malfunction in the automatic back door close switch or its related components.

4. How can I diagnose the cause of OBDII code B2420 in my Infiniti?

Diagnosing OBDII code B2420 in an Infiniti involves checking the wiring and connections of the automatic back door close switch, as well as testing the switch itself for proper functionality.

5. Can I repair OBDII code B2420 in my Infiniti on my own?

Repairing OBDII code B2420 in an Infiniti may be possible for those with automotive repair experience. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Is it safe to continue driving my Infiniti with OBDII code B2420?

It is not recommended to continue driving your Infiniti with OBDII code B2420, as it may lead to further issues with the automatic back door operation.

7. How much does it cost to repair OBDII code B2420 in an Infiniti?

The cost to repair OBDII code B2420 in an Infiniti can vary depending on the extent of the issue and the rates of the mechanic or dealership performing the repair.

8. Can resetting the OBDII system clear the B2420 code in my Infiniti?

Resetting the OBDII system may temporarily clear the B2420 code in your Infiniti, but it is essential to address the underlying issue to prevent the code from reappearing.

9. Are there any preventative measures to avoid OBDII code B2420 in an Infiniti?

Regularly inspecting and maintaining the automatic back door close switch in your Infiniti can help prevent issues that may trigger OBDII code B2420.

10. Will OBDII code B2420 affect the overall performance of my Infiniti?

While OBDII code B2420 is not directly related to the engine performance, it can impact the convenience and functionality of the automatic back door system in your Infiniti.