B1199 Code - Left Side Front Curtain Air Bag Module Voltage Short
Quick Answer
The Air Bag Sensor Unit (Air Bag Control Module) monitors the Left Side Front Curtain Air Bag Module. Common causes include Faulty Left Side Front Curtain Air Bag Module, Left Side Front Curtain Air Bag Module harness is open or shorted, Left Side Front Curtain 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
- B1199 indicates Left Side Front Curtain Air Bag Module Voltage Short.
- Common causes
- Common causes include Faulty Left Side Front Curtain Air Bag Module, Left Side Front Curtain Air Bag Module harness is open or shorted, Left Side Front Curtain 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 B1199 Description
What are the Possible Causes of the DTC B1199?
- Faulty Left Side Front Curtain Air Bag Module
- Left Side Front Curtain Air Bag Module harness is open or shorted
- Left Side Front Curtain Air Bag Module circuit poor electrical connection
- Faulty Air Bag Sensor Unit (Air Bag Control Module)
How to Fix the DTC B1199?
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 B1199 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 B1199 code?
Need more information on how to fix the B1199 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1199 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1199 Infiniti — Left Side Front Curtain Air Bag Module Voltage Short
- B1199 Nissan — Left Side Front Curtain Air Bag Module Voltage Short
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 B1199 Code
1. What does OBDII code B1199 mean?
Code B1199 indicates a voltage short in the Left Side Front Curtain Air Bag Module, typically caused by a wiring or electrical fault.
2. What are the symptoms of code B1199?
Common symptoms include the airbag warning light illuminating on the dashboard and a possible malfunction of the left front curtain airbag system.
3. What causes the B1199 code to trigger?
This code can be caused by damaged wiring, a short circuit, a faulty airbag module, or a problem with the airbag control unit.
4. Is it safe to drive with code B1199 active?
It is not safe to drive with this code, as it indicates a potential failure in the airbag system, which may not deploy properly in an accident.
5. How can I diagnose code B1199?
Check the wiring and connectors for the left front curtain airbag for damage, corrosion, or disconnection. Use a multimeter to test for voltage shorts.
6. Can I clear code B1199 without fixing the issue?
Clearing the code without addressing the underlying problem is not recommended, as the issue will likely recur and compromise airbag functionality.
7. How do I fix the B1199 code?
Repairs may include replacing damaged wiring, repairing connectors, or replacing the left side front curtain airbag module if it is faulty.
8. What tools are needed to troubleshoot code B1199?
You will need an OBDII scanner, a multimeter, and possibly a wiring diagram for your vehicle’s airbag system.
9. Can a discharged battery cause code B1199?
A low or unstable battery voltage can sometimes trigger airbag system faults, but this is less common for B1199. Check the battery and charging system as part of diagnostics.
10. Do I need a professional to fix code B1199?
Airbag systems are complex and safety-critical. It's recommended to have a qualified technician perform the diagnosis and repairs.
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