AutoCodes – Infiniti – B2099 Infiniti

B2099 Infiniti Code - Ignition Relay OFF Stuck

Quick Answer

The Intelligent Power Distribution Module (IPDM) Engine Room (E/R) operates the ignition relay when it receives an ignition switch ON signal from Body Control Module (BCM) via CAN communication. Common causes include Faulty Ignition Relay, Ignition Relay harness is open or shorted, Ignition Relay 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: B2099 Infiniti indicates Ignition Relay OFF Stuck.
Common causes: Common causes include Faulty Ignition Relay, Ignition Relay harness is open or shorted, Ignition Relay 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 4,118

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 Sep 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2099 Infiniti Description

The Intelligent Power Distribution Module (IPDM) Engine Room (E/R) operates the ignition relay when it receives an ignition switch ON signal from Body Control Module (BCM) via CAN communication. The OBDII code sets when the ignition relay OFF is detected for 1 second at ignition switch ON (CPU monitors the status at the contact and excitation coil circuits of the ignition relay inside it).

OBDII Code B2099 Infiniti - Ignition Relay OFF Stuck - AutoCodes.com — B2099 Infiniti Code - Ignition Relay OFF Stuck

What does this mean?

What are the Possible Causes of the DTC B2099 Infiniti?

Faulty Ignition Relay
Ignition Relay harness is open or shorted
Ignition Relay circuit poor electrical connection
Faulty Intelligent Power Distribution Module (IPDM)

How to Fix the DTC B2099 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 B2099 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 B2099 Infiniti code?

Need more information on how to fix the B2099 Infiniti code? Get Access to Factory Service Manuals

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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 B2099 Infiniti Code

1. What are common symptoms of OBDII code B2099 "Ignition Relay OFF Stuck" in an Infiniti?

- Common symptoms include difficulty starting the vehicle, engine stalling, and the inability to turn off the ignition.

2. What causes the OBDII code B2099 in an Infiniti related to the Ignition Relay OFF Stuck issue?

- The code B2099 is often triggered by a malfunctioning ignition relay, faulty wiring connections, or a problem with the ignition switch.

3. How can I diagnose the Ignition Relay OFF Stuck issue causing the OBDII code B2099 in my Infiniti?

- To diagnose the issue, check the ignition relay for proper function, inspect wiring for damage, and test the ignition switch for any faults using a multimeter.

4. Is it safe to continue driving my Infiniti with the OBDII code B2099 indicating an Ignition Relay OFF Stuck problem?

- It is not recommended to drive your vehicle with this issue as it can lead to potential safety hazards, such as unexpected stalling or loss of control.

5. How can I repair the Ignition Relay OFF Stuck issue causing the OBDII code B2099 in my Infiniti?

- Repair options may include replacing the faulty ignition relay, repairing damaged wiring, or replacing the ignition switch as needed.

6. Can a DIY enthusiast fix the OBDII code B2099 "Ignition Relay OFF Stuck" in an Infiniti?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the issue themselves, but professional assistance is recommended for complex electrical problems.

7. Will resetting the OBDII system clear the B2099 code related to the Ignition Relay OFF Stuck issue in my Infiniti?

- Resetting the OBDII system may temporarily clear the code, but it is crucial to address the root cause of the problem to prevent the code from reappearing.

8. Are there any preventive maintenance tips to avoid encountering the OBDII code B2099 in an Infiniti?

- Regularly inspecting the ignition system components, keeping wiring connections secure, and addressing any electrical issues promptly can help prevent the Ignition Relay OFF Stuck problem.

9. How much does it typically cost to repair the Ignition Relay OFF Stuck issue causing the OBDII code B2099 in an Infiniti?

- The cost of repair can vary depending on the specific components that need to be replaced or repaired, but it is advisable to consult a professional for an accurate estimate.

10. Can the OBDII code B2099 in an Infiniti be caused by other underlying issues besides the Ignition Relay OFF Stuck problem?

- While the B2099 code is commonly associated with the Ignition Relay OFF Stuck issue, it is recommended to perform a thorough diagnosis to rule out any other potential causes, such as sensor malfunctions or communication errors.