B0043 GMC Code - Driver Frontal Deployment Loop Stage 2 Voltage Out of Range
Quick Answer
The driver deployment loop consists of the following components: - A dual-stage inflatable restraint steering wheel module - The inflatable restraint steering wheel module coil - The steering wheel module high circuits for both stages 1 and 2 - The steering wheel module low circuits for both stages 1 and 2 There are 2 shorting bars used within the steering wheel module coil connector. Common causes include Faulty Steering Wheel Module Coil, Steering Wheel Module Coil harness is open or shorted, Steering Wheel Module Coil 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
- B0043 GMC indicates Driver Frontal Deployment Loop Stage 2 Voltage Out of Range.
- Common causes
- Common causes include Faulty Steering Wheel Module Coil, Steering Wheel Module Coil harness is open or shorted, Steering Wheel Module Coil 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 B0043 GMC Description
- A dual-stage inflatable restraint steering wheel module
- The inflatable restraint steering wheel module coil
- The steering wheel module high circuits for both stages 1 and 2
- The steering wheel module low circuits for both stages 1 and 2
There are 2 shorting bars used within the steering wheel module coil connector. These shorting bars short together both stages of the steering wheel module high circuit and the steering wheel module low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during servicing. During a frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop. This flow of current will deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory.
What are the Possible Causes of the DTC B0043 GMC?
- Faulty Steering Wheel Module Coil
- Steering Wheel Module Coil harness is open or shorted
- Steering Wheel Module Coil circuit poor electrical connection
- Faulty Steering Wheel Module
How to Fix the DTC B0043 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 B0043 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.
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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 B0043 GMC Code
1. What are common symptoms of OBDII code B0043 GMC?
- The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the airbag system.
2. What does the OBDII code B0043 GMC indicate?
- This code indicates that there is a problem with the Driver Frontal Deployment Loop Stage 2 Voltage being out of range in the airbag system.
3. What are possible causes of OBDII code B0043 GMC?
- Possible causes may include faulty wiring connections, a malfunctioning airbag sensor, or issues with the airbag control module.
4. How can I diagnose the issue related to OBDII code B0043 GMC?
- Diagnosing the issue often involves using a scan tool to read the specific fault code, checking the wiring connections, and testing the airbag system components.
5. Is it safe to drive with OBDII code B0043 GMC triggered?
- It is not recommended to drive with this code triggered, as it indicates a potential problem with the airbag system, which is crucial for occupant safety in the event of a collision.
6. Can I reset the OBDII code B0043 GMC myself?
- While you can clear the code with a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.
7. How should I repair OBDII code B0043 GMC?
- Repairing this code may involve fixing wiring issues, replacing faulty components, or reprogramming the airbag control module as needed.
8. How much does it cost to fix OBDII code B0043 GMC?
- The cost of fixing this code can vary depending on the specific issue causing it, but it may involve expenses for parts and labor.
9. Are there any safety precautions I should take when working on OBDII code B0043 GMC?
- When working on the airbag system related to this code, it is crucial to disconnect the vehicle's battery and wait for the capacitors to discharge to avoid accidental airbag deployment.
10. Can OBDII code B0043 GMC affect the vehicle's overall performance?
- While this code specifically relates to the airbag system, unresolved issues with the airbags can impact the vehicle's safety features and potentially affect its overall performance in the event of a collision.
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