B1065 Nissan Code - Assist Air Bag Module Open
Quick Answer
In the case of a frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by the electric ignition system. Common causes include Faulty Assist Air Bag Module, Assist Air Bag Module harness is open or shorted, Assist Air Bag Module 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
- B1065 Nissan indicates Assist Air Bag Module Open.
- Common causes
- Common causes include Faulty Assist Air Bag Module, Assist Air Bag Module harness is open or shorted, Assist Air Bag Module 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 B1065 Nissan Description
The front passenger air bag module mainly consists of air bag and inflator which inflates the air bag.
What are the Possible Causes of the DTC B1065 Nissan?
- Faulty Assist Air Bag Module
- Assist Air Bag Module harness is open or shorted
- Assist Air Bag Module circuit poor electrical connection
- Faulty Diagnosis Sensor Unit
How to Fix the DTC B1065 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 B1065 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 B1065 Nissan code?
Need more information on how to fix the B1065 Nissan code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1065 Nissan code diagnosed by a professional: Find a repair shop in your area
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 B1065 Nissan Code
1. What are the common symptoms of OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- The common symptoms include the airbag warning light illuminating on the dashboard and a potential failure of the airbag system.
2. What could cause the OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- The code B1065 typically indicates an open circuit in the wiring or connection to the assist airbag module in the vehicle.
3. How serious is OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- This code is serious as it pertains to the airbag system, which is a critical safety component in the vehicle. It should be addressed promptly.
4. Can I continue driving with OBDII code B1065 (Nissan) without fixing it?
- It is not recommended to continue driving with this code present, as it may compromise the functionality of the airbag system in the event of an accident.
5. How can I diagnose the cause of OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- Diagnosing this code may involve inspecting the wiring harness, connectors, and the assist airbag module itself for any signs of damage or loose connections.
6. Is it possible to repair OBDII code B1065 (Nissan) Assist Air Bag Module Open myself?
- While some DIY enthusiasts may attempt to address this code, it is recommended to have a professional technician handle the repair to ensure the airbag system's proper functionality.
7. What are the typical repair options for OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- Repair options may include repairing or replacing damaged wiring, connectors, or the assist airbag module itself to resolve the open circuit issue.
8. How much does it cost to fix OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- The cost of fixing this code can vary depending on the extent of the damage and the specific repairs needed. It is advisable to consult a professional for an accurate estimate.
9. Can resetting the OBDII system clear the B1065 (Nissan) code?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear.
10. Are there any safety precautions to take when dealing with OBDII code B1065 (Nissan) Assist Air Bag Module Open?
- When working on the airbag system, it is crucial to disconnect the vehicle's battery and wait for some time to discharge any stored power to prevent accidental deployment. It is also recommended to wear appropriate safety gear.
Discuss the causes and fixes for B1065 Nissan OBDII Code
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Code set is B1065. I can reset the code and drive the car for a day or two without code reappearing. Once a passenger rides in the seat, if they wiggle some the code sets. This makes me think the seat weight sensor is bad. All wiring and plugs look good. Dealer wants $160 to do scanner diagnostics, so I'm ready to try the sensor bypass device.
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Thanks for the detailed info — you're on the right track. The B1065 code typically points to an open circuit in the passenger-side airbag system, and based on your description, the issue likely lies with the occupant detection system, especially the seat weight sensor or its connection.
Since the code returns only when a passenger moves around, it does suggest an intermittent fault — possibly a loose connection, a cracked wire under the seat, or the sensor itself becoming unstable under pressure or movement.
Before going the bypass route (which may disable the passenger airbag and isn't generally recommended for safety reasons), I’d suggest these steps:
- Inspect the harness under the passenger seat again, especially while gently moving the wires. Sometimes the fault appears only when the wires are flexed.
- Check for any TSBs (technical service bulletins) for your model — Nissan has had some seat sensor issues in the past.
- If you're comfortable, try reseating the connectors (unplug and replug, battery disconnected for safety), or even cleaning them with electrical contact cleaner.
- If the seat sensor is confirmed faulty, replacing it is ideal. A bypass device might clear the light, but it may disable proper airbag deployment in a crash.
Let me know your year and model — I can check if there's a common issue or recall for your specific vehicle.
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Thanks for your reply. My truck is a 2007 Nissan Titan crew cab 4x4 LE model. I have disconnected the two smaller plugs under the seat (battery discon) and sprayed them with contact cleaner. As for replacing the sensor, it is my understanding that this requires removing the seat and tearing down the seat bottom to access the sensor pad which itself costs $800 or more. I ran my VIN on a recall site and found no open recalls for this vehicle. I have read that the bypass systems from Airbag360.com tells the system the seat is always occupied by a person heavy enough to activate the system, which is what I want. If the system is always active, I can live with airbag deployment in a wreck even if the seat is unoccupied, so long as it works when it is occupied. Any other information or advice is greatly appreciated! Thanks again.
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Thanks for the follow-up and for sharing the details — that helps a lot.
You're right, on the 2007 Nissan Titan, the occupant detection sensor (ODS) is built into the seat cushion and unfortunately, yes — it's not sold separately in most cases. The whole bottom cushion with the sensor mat can cost $800+ and requires removing and disassembling the seat, which is a labor-heavy job. Nissan made it unnecessarily difficult on that setup.
Given what you’ve already done — cleaning the connectors and confirming no open recalls — and the fact that the fault only shows up when someone moves in the seat, your diagnosis is solid: the ODS mat is likely degraded or has a break in the internal wiring.
As for using a bypass like the one from Airbag360, you're also correct — those devices tell the system the seat is always occupied, so the passenger airbag is always ready to deploy. That means the light stays off, and the airbag will deploy in a crash regardless of whether someone is in the seat. From a function standpoint, that solves the problem — though just be aware it technically alters the factory safety system.
Plenty of techs and owners have used these bypass units when the cost of repair isn't justifiable — especially on an older truck. Just make sure:
- The bypass is compatible with your exact year/model.
- You leave everything else (connectors, wiring) in place and secure.
- You clearly inform future owners or anyone else working on the vehicle that a bypass is installed.
If you’re confident the rest of the airbag system is good, and you're aware of the trade-offs, the bypass is a practical fix in this situation.
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Thanks so much. This is exactly the information I was hoping for! For $99 it worth a try.
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