AutoCodes – GMC – B1348 GMC

B1348 GMC Code - Driver Front Airbag Short to Ground

Quick Answer

When the ignition switch is turned to ON, the Sensing and Diagnostic Module (SDM) will perform turn-on test to diagnose critical malfunctions within SDM itself. Common causes include Faulty Driver Front Airbag, Driver Front Airbag harness is open or shorted, Driver Front Airbag 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: B1348 GMC indicates Driver Front Airbag Short to Ground.
Common causes: Common causes include Faulty Driver Front Airbag, Driver Front Airbag harness is open or shorted, Driver Front Airbag 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.

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Code Popularity 1,020

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 Mar 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1348 GMC Description

When the ignition switch is turned to ON, the Sensing and Diagnostic Module (SDM) will perform turn-on test to diagnose critical malfunctions within SDM itself.
Upon passing these test ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deploy loops.
The SDM checks the wiring connection to the driver airbag module by letting the infinitesimal current flow through the internal circuit and verify the resistance.

OBDII Code B1348 GMC - Driver Front Airbag Short to Ground - AutoCodes.com — B1348 GMC Code - Driver Front Airbag Short to Ground

What does this mean?

What are the Possible Causes of the DTC B1348 GMC?

Faulty Driver Front Airbag
Driver Front Airbag harness is open or shorted
Driver Front Airbag circuit poor electrical connection
Faulty Clockspring

How to Fix the DTC B1348 GMC?

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 B1348 GMC 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 B1348 GMC code?

Need more information on how to fix the B1348 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1348 GMC code diagnosed by a professional: Find a repair shop in your area

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 B1348 GMC Code

1. What are common symptoms of OBDII code B1348 GMC (Driver Front Airbag Short to Ground)?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the driver front airbag in the event of a collision.

2. What are the possible causes of OBDII code B1348 GMC?

- Possible causes include damaged wiring or connectors in the driver front airbag system, a malfunctioning airbag module, or a short circuit to ground in the airbag circuit.

3. How can I diagnose the cause of OBDII code B1348 GMC?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, inspecting the wiring and connectors in the driver front airbag system, and performing continuity tests to identify any short circuits.

4. Is it safe to drive with OBDII code B1348 GMC active?

- It is not recommended to drive with this code active, as it indicates a potential issue with the driver front airbag system, which could compromise your safety in the event of an accident.

5. Can I reset OBDII code B1348 GMC without fixing the underlying issue?

- Resetting the code without addressing the root cause will not resolve the problem and may lead to the code reoccurring. It is important to diagnose and repair the issue to ensure proper airbag functionality.

6. How can I repair OBDII code B1348 GMC?

- Repair methods may include repairing or replacing damaged wiring, connectors, or components in the driver front airbag system, fixing any short circuits, or replacing the airbag module if necessary.

7. Is it possible to clear OBDII code B1348 GMC without a professional scan tool?

- While some basic code readers may be able to clear the code, it is recommended to use a professional scan tool to ensure proper diagnosis and repair of the underlying issue causing the fault code.

8. Are there any safety precautions to follow when working on OBDII code B1348 GMC?

- When working on the airbag system, it is essential to disconnect the vehicle's battery and wait at least 10 minutes before starting any repairs to prevent accidental airbag deployment.

9. Can OBDII code B1348 GMC be triggered by a loose or disconnected airbag connector?

- Yes, a loose or disconnected airbag connector in the driver front airbag system can potentially trigger OBDII code B1348 GMC due to the loss of continuity in the circuit.

10. How can I prevent OBDII code B1348 GMC from recurring in the future?

- To prevent the code from recurring, ensure all wiring and connectors in the driver front airbag system are in good condition, perform regular inspections, and address any issues promptly to maintain airbag functionality.