AutoCodes – Nissan – B2638 Nissan

B2638 Nissan Code - Driver D/F1 Door Fail

Quick Answer

The Air Condition (A/C) Automatic Amplifier monitors the Front Mode Door Motor position. Common causes include Faulty Front Mode Door Motor, Front Mode Door Motor harness is open or shorted, Front Mode Door Motor 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: B2638 Nissan indicates Driver D/F1 Door Fail.
Common causes: Common causes include Faulty Front Mode Door Motor, Front Mode Door Motor harness is open or shorted, Front Mode Door Motor 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 2,442

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 Jan 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2638 Nissan Description

The Air Condition (A/C) Automatic Amplifier monitors the Front Mode Door Motor position. The A/C Automatic Amplifier sets the Diagnostic Trouble Code (DTC) when the malfunctioning door position is detected at FOOT position.

OBDII Code B2638 Nissan - Driver D/F1 Door Fail - AutoCodes.com — B2638 Nissan Code - Driver D/F1 Door Fail

What does this mean?

What are the Possible Causes of the DTC B2638 Nissan?

Faulty Front Mode Door Motor
Front Mode Door Motor harness is open or shorted
Front Mode Door Motor circuit poor electrical connection
Front Mode Door Motor control linkage installation condition
Faulty Air Condition (A/C) Automatic Amplifier

How to Fix the DTC B2638 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 B2638 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.

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Need more information on how to fix the B2638 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2638 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 B2638 Nissan Code

1. What are the common symptoms of OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- Common symptoms include the inability to lock or unlock the driver's door using the central locking system and issues with the door ajar warning system.

2. What are the possible causes of OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- The code B2638 can be triggered by a faulty driver's door latch assembly, damaged wiring connections, or a malfunctioning door ajar sensor.

3. How can I diagnose the OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- Diagnosis involves checking the wiring harness for any visible damage, testing the door latch for proper operation, and using a diagnostic scanner to identify the specific issue.

4. Can I repair OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail myself?

- Depending on the root cause, you may be able to repair the issue yourself by replacing the faulty door latch assembly, repairing damaged wiring, or recalibrating the door ajar sensor.

5. Are there any tips for preventing OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- Regularly lubricating the door latch mechanism, avoiding slamming the door shut, and addressing any issues with the central locking system promptly can help prevent code B2638 from occurring.

6. What other components should I check if OBDII code B2638 persists in a Nissan related to Driver D/F1 Door Fail?

- In addition to the door latch assembly and wiring connections, it's important to inspect the door ajar sensor, the central locking system, and the vehicle's body control module for any related issues.

7. Is it safe to continue driving with OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- While the vehicle may still be operable with this code, it's important to address the underlying issue promptly to ensure the proper functioning of the driver's door locking mechanism and related safety features.

8. How do I reset the OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the stored fault code from the system.

9. Can extreme weather conditions contribute to triggering OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- Yes, extreme temperatures or moisture can potentially affect the operation of the door latch assembly, wiring connections, or door ajar sensor, leading to the triggering of code B2638.

10. What should I do if I encounter intermittent issues with OBDII code B2638 in a Nissan related to Driver D/F1 Door Fail?

- If you experience intermittent problems, it's important to conduct thorough diagnostic tests to pinpoint the exact cause and address any underlying issues before they worsen.