B1004 Nissan 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
- B1004 Nissan 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 B1004 Nissan 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 B1004 Nissan?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1004 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 B1004 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 B1004 Nissan code?
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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.
Frequently Asked Questions about B1004 Nissan Code
1. What is OBDII code B1004 for Nissan?
OBDII code B1004 for Nissan refers to a fault with the Diagnosis Sensor Unit (DSU) in the vehicle's system.
2. What are common symptoms of a B1004 Nissan code?
Common symptoms of a B1004 Nissan code may include airbag warning lights on the dashboard, non-deployment of airbags in a collision, and potential issues with other safety systems.
3. What are possible causes of the B1004 Nissan code?
Possible causes of the B1004 Nissan code include a malfunctioning DSU, wiring issues, loose connections, or a faulty airbag control module.
4. How can I diagnose and repair a B1004 Nissan code?
Diagnosing and repairing a B1004 Nissan code typically involves using an OBDII scanner to retrieve the specific diagnostic trouble code, inspecting the DSU and its connections, checking for wiring faults, and potentially replacing the DSU or related components if necessary.
5. Can I drive my Nissan with a B1004 code?
It is not recommended to drive your Nissan with a B1004 code, as it indicates a fault with the airbag system, which is crucial for your safety in the event of a collision.
6. How much does it cost to fix a B1004 Nissan code?
The cost to fix a B1004 Nissan code can vary depending on the exact cause of the issue. Repair costs may include diagnostic fees, parts replacement, and labor charges, which could range from a few hundred to over a thousand dollars.
7. Is it safe to reset the B1004 Nissan code without fixing the underlying issue?
Resetting the B1004 Nissan code without fixing the underlying issue is not recommended, as it may lead to safety risks due to potential airbag system malfunctions.
8. Can a DIY enthusiast fix a B1004 Nissan code?
While some DIY enthusiasts may have the skills to diagnose and repair a B1004 Nissan code, it is recommended to consult with a qualified mechanic or technician to ensure the issue is properly addressed, especially when dealing with safety systems.
9. How long does it take to repair a B1004 Nissan code?
The time to repair a B1004 Nissan code can vary depending on the exact cause of the issue, availability of parts, and the expertise of the mechanic. It may take anywhere from a few hours to a day or more to complete the repair.
10. Will a B1004 Nissan code affect my vehicle's performance?
While a B1004 Nissan code may not directly impact your vehicle's performance, it is crucial to address the issue promptly to ensure the proper functioning of the airbag system and overall safety of the vehicle.
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