B1046 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
- B1046 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 B1046 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 B1046?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1046?
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 B1046 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 B1046 code?
Need more information on how to fix the B1046 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1046 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1046 Infiniti — Diagnosis Sensor Unit
- B1046 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 B1046 Code
1. What are the common symptoms of an OBDII code B1046 related to the Diagnosis Sensor Unit?
- Common symptoms include issues with airbag deployment, illuminated airbag warning light, and potential loss of communication with the airbag system.
2. What are the possible causes of an OBDII code B1046 related to the Diagnosis Sensor Unit?
- Possible causes may include a faulty diagnosis sensor unit, damaged wiring or connectors in the airbag system, or a malfunction in the airbag control module.
3. How can I diagnose an OBDII code B1046 related to the Diagnosis Sensor Unit?
- Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble code, inspecting the airbag system components for damage, and testing the diagnosis sensor unit and related circuits.
4. Can I repair an OBDII code B1046 related to the Diagnosis Sensor Unit myself?
- While some basic troubleshooting like checking connections and fuses can be done by DIY enthusiasts, diagnosing and repairing airbag system issues should be left to professional technicians for safety reasons.
5. Is it safe to drive with an OBDII code B1046 related to the Diagnosis Sensor Unit?
- It is not recommended to drive with this code present, as it indicates a potential problem with the airbag system, which is a critical safety feature in a vehicle.
6. How much does it typically cost to repair an OBDII code B1046 related to the Diagnosis Sensor Unit?
- Repair costs can vary depending on the specific issue causing the code and the labor rates in your area. It's best to get a professional diagnosis to determine the exact cost.
7. Will resetting the OBDII code B1046 related to the Diagnosis Sensor Unit make the problem go away?
- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the code to appear. The problem will likely reoccur until properly diagnosed and repaired.
8. Can a low vehicle battery voltage trigger an OBDII code B1046 related to the Diagnosis Sensor Unit?
- Yes, low battery voltage or electrical system issues can sometimes trigger false codes in the airbag system, so it's important to ensure the vehicle's electrical system is in good condition.
9. How long does it typically take to repair an OBDII code B1046 related to the Diagnosis Sensor Unit?
- The repair time can vary based on the specific cause of the code. Simple fixes like reconnecting a loose wire may take less time, while more complex issues could require several hours or more.
10. Are there any recalls or technical service bulletins related to OBDII code B1046 and the Diagnosis Sensor Unit?
- It's recommended to check with the vehicle manufacturer or a trusted service center for any relevant recalls or technical service bulletins related to this specific OBDII code and component.
Discuss the causes and fixes for B1046 OBDII Code
Code B1046 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
