Engine-Codes.com
Engine-Codes – Generic – B1199

B1199 Code - Left Side Front Curtain Air Bag Module Voltage Short

Quick Answer

The B1199 diagnostic trouble code (DTC) indicates a voltage short in the left side front curtain airbag module of a vehicle. Common causes include Electrical short or open circuit in the wiring harness connected to the left side front curtain airbag module, Faulty left side front curtain airbag module, Corrosion or damage to the connectors or terminals in the airbag system. 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 Electrical short or open circuit in the wiring harness connected to the left side front curtain airbag module, Faulty left side front curtain airbag module, Corrosion or damage to the connectors or terminals in the airbag system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1199 Description

The B1199 diagnostic trouble code (DTC) indicates a voltage short in the left side front curtain airbag module of a vehicle. This specific code pertains to the airbag system, which is a crucial safety feature designed to protect occupants in the event of a collision. When this code is triggered, it means that there is an electrical issue within the airbag module on the left side of the vehicle, potentially compromising the functionality of the airbag system.

OBDII Code B1199 - Left Side Front Curtain Air Bag Module Voltage Short
B1199 Code - Left Side Front Curtain Air Bag Module Voltage Short

Common Causes of B1199

  1. Electrical short or open circuit in the wiring harness connected to the left side front curtain airbag module.
  2. Faulty left side front curtain airbag module.
  3. Corrosion or damage to the connectors or terminals in the airbag system.
  4. Issues with the vehicle's battery or electrical system affecting the voltage supply to the airbag module.

Symptoms of B1199

  1. Illuminated airbag warning light on the dashboard.
  2. Inability to turn off the airbag warning light even after resetting.
  3. Diagnostic trouble code B1199 stored in the vehicle's computer system.
  4. Loss of power to the left side front curtain airbag module.

How to Fix B1199

  1. Diagnose the specific cause of the voltage short in the left side front curtain airbag module using a scan tool to retrieve the DTC.
  2. Inspect the wiring harness, connectors, and terminals for any signs of damage, corrosion, or loose connections.
  3. Test the voltage supply to the airbag module to identify any issues with the vehicle's electrical system.
  4. Replace the faulty left side front curtain airbag module if necessary.
  5. Clear the DTC from the vehicle's computer system and perform a test to ensure the airbag system is functioning properly.

Cost to Fix B1199

The cost of repairing a voltage short in the left side front curtain airbag module can vary depending on the specific cause of the issue and the vehicle's make and model. In general, the repair may range from $200 to $500, including parts and labor. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

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

Code B1199 Information for Specific Makes

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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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.

Discuss the causes and fixes for B1199 OBDII Code

Submit a New Comment

Code B1199 comments

No comments found for this page.