AutoCodes – Infiniti – B2890 Infiniti

B2890 Infiniti 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 Infiniti 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 557
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 18, 2020
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Code B2890 Infiniti 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 Infiniti - DC/DC Converter - AutoCodes.com
B2890 Infiniti Code - DC/DC Converter

What are the Possible Causes of the DTC B2890 Infiniti?

  • 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 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 B2890 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 B2890 Infiniti code?

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

Need Help with the Code?

Get the B2890 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 B2890 Infiniti Code

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

The common symptoms include poor fuel efficiency, reduced power output, and potential issues with the vehicle's electrical system.

2. What are the possible causes of OBDII code B2890 in an Infiniti, specifically related to the DC/DC converter?

Possible causes include a faulty DC/DC converter, damaged wiring or connectors, or issues with the power supply to the converter.

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

Diagnosis typically involves using a scan tool to read the code, inspecting the DC/DC converter and related components for physical damage, and testing the electrical connections.

4. Can I continue driving my Infiniti with OBDII code B2890 related to the DC/DC converter?

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

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

Repairing the issue may involve replacing the DC/DC converter, repairing damaged wiring or connectors, or addressing any underlying power supply issues.

6. Are there any preventive maintenance tips to avoid encountering OBDII code B2890 related to the DC/DC converter?

Regularly inspecting the electrical system, ensuring proper maintenance of the vehicle's charging system, and addressing any warning signs promptly can help prevent issues with the DC/DC converter.

7. How much does it typically cost to repair OBDII code B2890 in an Infiniti related to the DC/DC converter?

The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it may range from a few hundred to a few thousand dollars.

8. Can a DIY enthusiast repair OBDII code B2890 related to the DC/DC converter in an Infiniti?

While some basic troubleshooting and inspections can be done by a DIY enthusiast, repairing issues related to the DC/DC converter may require specialized tools and expertise, so it is recommended to consult a professional mechanic.

9. Will resetting the OBDII code B2890 related to the DC/DC converter make it go away permanently?

Simply clearing the code without addressing the underlying issue with the DC/DC converter will likely result in the code reappearing. It is essential to diagnose and repair the root cause of the problem.

10. How long does it typically take to repair OBDII code B2890 in an Infiniti related to the DC/DC converter?

The repair time can vary depending on the extent of the issue, the availability of parts, and the mechanic's expertise, but it may take several hours to a day to complete the repair.

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