B1028 Code - Diagnosis Sensor Unit
Quick Answer
The Air Bag Diagnosis Sensor Unit detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the air bag warning lamp in the combination meter. Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit 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
- B1028 indicates Diagnosis Sensor Unit.
- Common causes
- Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit 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.
Code B1028 Description
The Air Bag Diagnosis Sensor Unit contains the “G†sensors for both frontal and side collisions and spare battery function in case of main battery damaged in a collision.
What are the Possible Causes of the DTC B1028?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1028?
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 B1028 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 B1028 code?
Need more information on how to fix the B1028 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1028 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1028 Infiniti — Diagnosis Sensor Unit
- B1028 Nissan — Diagnosis Sensor Unit
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.
Frequently Asked Questions about B1028 Code
1. What are the common symptoms of OBDII code B1028 related to the Diagnosis Sensor Unit?
- The common symptoms include issues with airbag warning lights, malfunctioning airbag systems, and potential safety concerns.
2. What are the possible causes of OBDII code B1028 related to the Diagnosis Sensor Unit?
- The causes may include a faulty diagnosis sensor unit, damaged wiring or connectors, or issues with the airbag control module.
3. How can I diagnose OBDII code B1028 related to the Diagnosis Sensor Unit?
- Diagnosis typically involves using a scan tool to retrieve the specific fault code and then conducting further testing to pinpoint the exact cause of the issue.
4. Can I repair OBDII code B1028 related to the Diagnosis Sensor Unit myself?
- While some basic troubleshooting like checking connections and fuses can be done by DIYers, diagnosing and repairing airbag-related issues is best left to professionals due to safety concerns.
5. What are the risks of ignoring OBDII code B1028 related to the Diagnosis Sensor Unit?
- Ignoring this code can lead to the airbag system not deploying properly in the event of a collision, putting occupants at risk of serious injury.
6. Are there any safety precautions to consider when dealing with OBDII code B1028 related to the Diagnosis Sensor Unit?
- It is crucial to disconnect the vehicle's battery before working on any airbag-related components to prevent accidental deployment.
7. How much does it cost to repair OBDII code B1028 related to the Diagnosis Sensor Unit?
- Repair costs can vary depending on the exact cause of the issue, but it's important to budget for potentially expensive repairs due to the critical nature of the airbag system.
8. Can a faulty diagnosis sensor unit cause other OBDII codes to appear?
- Yes, a faulty diagnosis sensor unit can trigger other related codes, so it's essential to address this issue promptly to prevent further complications.
9. Is it safe to drive my vehicle with OBDII code B1028 related to the Diagnosis Sensor Unit?
- It is not recommended to drive the vehicle until the issue is diagnosed and repaired, as the airbag system may not function correctly in case of an accident.
10. How long does it take to repair OBDII code B1028 related to the Diagnosis Sensor Unit?
- The repair time can vary depending on the specific cause of the issue, but it is advisable to consult a professional for an accurate assessment and repair timeline.
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