AutoCodes – Nissan – B2890 Nissan

B2890 Nissan Code - DC/DC Converter

Quick Answer

The Power Delivery Module (PDM) monitors the DC/DC Converter. Common causes include Faulty 12V Battery, 12V Battery harness is open or shorted, 12V Battery 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: B2890 Nissan indicates DC/DC Converter.
Common causes: Common causes include Faulty 12V Battery, 12V Battery harness is open or shorted, 12V Battery 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 890

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 Feb 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2890 Nissan Description

The Power Delivery Module (PDM) monitors the DC/DC Converter. The PDM sets the OBDII code when the DC/DC Converter is not to factory specifications.

OBDII Code B2890 Nissan - DC/DC Converter - AutoCodes.com — B2890 Nissan Code - DC/DC Converter

What does this mean?

What are the Possible Causes of the DTC B2890 Nissan?

Faulty 12V Battery
12V Battery harness is open or shorted
12V Battery circuit poor electrical connection
Faulty Power Delivery Module (PDM)

How to Fix the DTC B2890 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 B2890 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 B2890 Nissan code?

Need more information on how to fix the B2890 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2890 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 B2890 Nissan Code

1. What are common symptoms of OBDII code B2890 in a Nissan related to the DC/DC converter?

- Common symptoms include poor fuel economy, loss of power, and difficulty starting the vehicle.

2. What is the main cause of OBDII code B2890 in a Nissan related to the DC/DC converter?

- The main cause is typically a malfunction or failure of the DC/DC converter itself.

3. How can I diagnose the issue causing OBDII code B2890 in my Nissan related to the DC/DC converter?

- A thorough inspection of the DC/DC converter and its connections is recommended, along with testing its voltage output.

4. Can a faulty DC/DC converter cause other issues in my Nissan besides triggering OBDII code B2890?

- Yes, a malfunctioning DC/DC converter can lead to various electrical problems in the vehicle and affect its overall performance.

5. Is it safe to continue driving my Nissan with OBDII code B2890 related to the DC/DC converter?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage and potential safety hazards.

6. How can I repair OBDII code B2890 in my Nissan related to the DC/DC converter?

- Repairing this code typically involves replacing the faulty DC/DC converter with a new or rebuilt unit.

7. Are there any preventive maintenance measures I can take to avoid OBDII code B2890 related to the DC/DC converter in my Nissan?

- Regularly inspecting the electrical components of the vehicle and addressing any issues promptly can help prevent the occurrence of this code.

8. Can a DIY enthusiast replace the DC/DC converter to resolve OBDII code B2890 in a Nissan?

- While it is possible for experienced DIYers to replace the DC/DC converter, this task is best left to professionals due to its complexity and potential safety risks.

9. Are there any recalls or technical service bulletins related to OBDII code B2890 in Nissan vehicles concerning the DC/DC converter?

- It is advisable to check with Nissan or a qualified mechanic to see if there are any relevant recalls or bulletins addressing this specific issue.

10. How much can I expect to pay for repairing OBDII code B2890 in my Nissan related to the DC/DC converter?

- Repair costs can vary depending on the extent of the damage and the labor rates in your area, but budgeting for several hundred dollars is typical for this repair.