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B1078 Infiniti Code - Diagnosis Sensor Unit

Quick Answer

The B1078 code in Infiniti vehicles refers to an issue with the Diagnosis Sensor Unit. Common causes include Electrical issues such as a short circuit or faulty wiring, Sensor unit failure due to wear and tear, Corrosion or water damage to the sensor unit. 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
B1078 Infiniti indicates Diagnosis Sensor Unit.
Common causes
Common causes include Electrical issues such as a short circuit or faulty wiring, Sensor unit failure due to wear and tear, Corrosion or water damage to the sensor unit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code B1078 Infiniti Description

The B1078 code in Infiniti vehicles refers to an issue with the Diagnosis Sensor Unit. This unit is responsible for monitoring various systems within the vehicle, such as the engine, transmission, and emissions control. When this sensor unit malfunctions or fails, it can lead to inaccurate data being sent to the vehicle's onboard computer, resulting in performance issues and potential safety hazards. The Diagnosis Sensor Unit plays a crucial role in ensuring the proper functioning of the vehicle's systems and must be addressed promptly to prevent further damage.

OBDII Code B1078 Infiniti - Diagnosis Sensor Unit
B1078 Infiniti Code - Diagnosis Sensor Unit

Common Causes of B1078 Infiniti

  1. Electrical issues such as a short circuit or faulty wiring
  2. Sensor unit failure due to wear and tear
  3. Corrosion or water damage to the sensor unit
  4. Software malfunction in the onboard computer
  5. Impact or physical damage to the sensor unit

Symptoms of B1078 Infiniti

  1. Check engine light illuminated on the dashboard
  2. Inaccurate or erratic readings on the vehicle's gauges
  3. Loss of power or acceleration
  4. Difficulty starting the vehicle
  5. Rough idling or stalling

How to Fix B1078 Infiniti

  1. Begin by conducting a thorough inspection of the Diagnosis Sensor Unit and its connections.
  2. Check for any loose or damaged wiring that may be causing the issue.
  3. Test the sensor unit using diagnostic tools to pinpoint the exact problem.
  4. Replace the sensor unit if it is determined to be faulty.
  5. Clear the diagnostic code and reset the vehicle's computer to ensure the issue has been resolved.

Cost to Fix B1078 Infiniti

The typical repair costs for addressing a B1078 code in an Infiniti vehicle can vary depending on the extent of the issue and the specific parts needed for repair. On average, the cost of replacing a Diagnosis Sensor Unit ranges from $200 to $500, including parts and labor. Keep in mind that additional diagnostic time and labor costs may apply, so it's recommended to consult with a certified mechanic for an accurate estimate based on your vehicle's make and model.

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1078 Infiniti Code

1. What are the common symptoms of OBDII code B1078 in an Infiniti?

- Common symptoms include issues with the airbag system, such as the airbag warning light staying on or flashing intermittently.

2. What is the likely cause of OBDII code B1078 in an Infiniti?

- The most common cause of this code is a malfunction in the Diagnosis Sensor Unit, which is part of the airbag system.

3. How can I diagnose OBDII code B1078 in my Infiniti?

- To diagnose this code, a professional diagnostic scan tool is needed to read the specific error code and pinpoint the issue with the Diagnosis Sensor Unit.

4. Can I continue driving my Infiniti with OBDII code B1078 present?

- It is not recommended to drive your vehicle with this code present, as it indicates a potential problem with the airbag system, which is crucial for safety in case of a collision.

5. How can I repair OBDII code B1078 in my Infiniti?

- Repairing this code typically involves replacing the Diagnosis Sensor Unit with a new, properly functioning unit to resolve the issue.

6. Are there any common DIY repair tips for fixing OBDII code B1078 in an Infiniti?

- DIY repair for this code is not recommended due to the complexity and safety implications of working on the airbag system. It's best to have a professional technician address this issue.

7. Is resetting the OBDII code B1078 in my Infiniti enough to solve the problem?

- Simply resetting the code will not fix the underlying issue causing OBDII code B1078. Proper diagnosis and repair of the Diagnosis Sensor Unit are necessary to resolve the problem.

8. Can a faulty Diagnosis Sensor Unit cause other issues in my Infiniti?

- Yes, a malfunctioning Diagnosis Sensor Unit can lead to a variety of issues, such as the airbag system not deploying correctly in the event of a collision.

9. How long does it take to replace the Diagnosis Sensor Unit in an Infiniti?

- The time required to replace the Diagnosis Sensor Unit can vary depending on the model of the Infiniti and the technician's experience, but it typically takes a few hours.

10. Will OBDII code B1078 in my Infiniti reset on its own after the issue is fixed?

- Once the underlying issue causing the code is fixed, the code should be cleared after a successful repair and driving cycles, or it may be cleared manually using a diagnostic tool.

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