B1126 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
- B1126 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 B1126 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 B1126?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1126?
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 B1126 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 B1126 code?
Need more information on how to fix the B1126 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1126 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1126 Acura — Driver Side Power Window Motor 'B' Pulse Error
- B1126 Honda — Driver Side Power Window Motor 'B' Pulse Error
- B1126 Infiniti — Diagnosis Sensor Unit
- B1126 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 B1126 Code
1. What is the OBDII code B1126 for Diagnosis Sensor Unit?
The B1126 code indicates a fault in the Diagnosis Sensor Unit, which is responsible for monitoring various vehicle systems.
2. What are common symptoms of a B1126 code?
Common symptoms of a B1126 code may include illuminated warning lights on the dashboard, reduced performance, and issues with vehicle stability control.
3. What are possible causes of the B1126 code?
Possible causes of the B1126 code include a faulty Diagnosis Sensor Unit, wiring issues, or a malfunction in the vehicle's electronic control unit (ECU).
4. How can I diagnose the B1126 code?
Diagnosing the B1126 code typically involves using a diagnostic scanner to retrieve the specific fault code and conducting a thorough inspection of the Diagnosis Sensor Unit and related components.
5. Can I repair the B1126 code myself?
Repairing the B1126 code may require advanced automotive knowledge and specialized tools. It is recommended to consult a professional mechanic for accurate diagnosis and repair.
6. How much does it cost to fix the B1126 code?
The cost of fixing the B1126 code can vary depending on the underlying cause of the issue, the extent of the damage, and the labor rates of the repair shop. It is advisable to obtain multiple quotes for an accurate estimate.
7. Is it safe to drive with a B1126 code?
Driving with a B1126 code can be risky as it may affect the vehicle's stability control system and overall performance. It is recommended to address the issue promptly to avoid potential safety hazards.
8. Can a B1126 code cause other problems in my vehicle?
If left unresolved, a B1126 code can lead to further electrical issues, affecting other vehicle systems and potentially causing more severe malfunctions.
9. How often does the B1126 code occur in vehicles?
The occurrence of the B1126 code may vary depending on the make and model of the vehicle, as well as the driving conditions and maintenance history. It is considered a relatively uncommon OBDII code.
10. Are there any preventative measures to avoid the B1126 code?
Regular maintenance, timely repairs of related components, and avoiding harsh driving conditions can help prevent the occurrence of the B1126 code in your vehicle.
Discuss the causes and fixes for B1126 OBDII Code
Code B1126 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.
