AutoCodes – Generic – B1907

B1907 Code - Short to Ground in Front Pretensioner Squib Left Circuit

Quick Answer

The Front Pretensioner Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Left (LH). Common causes include Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left), Front Seat Outer Belt Assembly Left is open or shorted, Front Seat Outer Belt Assembly Left 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: B1907 indicates Short to Ground in Front Pretensioner Squib Left Circuit.
Common causes: Common causes include Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left), Front Seat Outer Belt Assembly Left is open or shorted, Front Seat Outer Belt Assembly Left 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.

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Code Popularity 11,728

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 07, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1907 Description

The Front Pretensioner Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Left (LH). This circuit instructs the Supplemental Restraint System (SRS) to deploy when the deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when a malfunction is detected in the Front Pretensioner Squib Left Circuit.

OBDII Code B1907 - Short to Ground in Front Pretensioner Squib Left Circuit - AutoCodes.com — B1907 Code - Short to Ground in Front Pretensioner Squib Left Circuit

What does this mean?

What are the Possible Causes of the DTC B1907?

Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left)
Front Seat Outer Belt Assembly Left is open or shorted
Front Seat Outer Belt Assembly Left poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1907?

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 B1907 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 B1907 code?

Need more information on how to fix the B1907 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1907 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1907 Hyundai — Front Sensor Signal Fault
B1907 KIA — Front Sensor Signal Fault
B1907 Lexus — Short to Ground in Front Pretensioner Squib Left Circuit
B1907 Scion — Short to Ground in Front Pretensioner Squib Left Circuit
B1907 Toyota — Short to Ground in Front Pretensioner Squib Left Circuit

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 B1907 Code

1. What are the common symptoms of OBDII code B1907 (Short to Ground in Front Pretensioner Squib Left Circuit)?

- Common symptoms include the airbag warning light being illuminated on the dashboard and possible loss of functionality of the front left seatbelt pretensioner.

2. What can cause OBDII code B1907 to be triggered?

- This code is typically triggered by a short circuit to ground in the wiring or connector of the front pretensioner squib left circuit.

3. How serious is OBDII code B1907 (Short to Ground in Front Pretensioner Squib Left Circuit)?

- This code indicates a potential issue with the safety system of the vehicle, specifically the front left seatbelt pretensioner, and should be addressed promptly to ensure proper airbag deployment in case of an accident.

4. What is the recommended course of action when OBDII code B1907 is detected?

- It is recommended to have the vehicle inspected by a qualified technician to diagnose the exact cause of the short to ground in the front pretensioner squib left circuit and make the necessary repairs.

5. Can I continue driving my vehicle with OBDII code B1907 present?

- It is not advisable to continue driving the vehicle with this code present, as it may compromise the proper functioning of the front left seatbelt pretensioner and airbag system.

6. How can I repair OBDII code B1907 on my own?

- Repairing this code may require advanced electrical diagnostic skills and specialized tools. It is recommended to seek professional assistance to properly diagnose and repair the issue.

7. Is it necessary to replace the front pretensioner squib left circuit to resolve OBDII code B1907?

- In some cases, the issue may be resolved by repairing the wiring or connector causing the short to ground. However, if the component itself is faulty, it may need to be replaced.

8. Will resetting the OBDII code B1907 turn off the airbag warning light?

- Resetting the code may temporarily turn off the warning light, but it will likely reappear if the underlying issue is not addressed. It is important to fix the root cause of the problem to prevent the code from returning.

9. How much does it typically cost to repair OBDII code B1907?

- The cost of repairing this code can vary depending on the extent of the damage and the specific repairs needed. It is best to consult with a professional technician for an accurate estimate.

10. Can OBDII code B1907 be a recurring issue even after it has been repaired?

- If the root cause of the short to ground in the front pretensioner squib left circuit is not properly addressed, the code may reoccur. It is important to ensure that the repairs are done correctly to prevent future issues.