B0043 Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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 Chevrolet Code
1. What are the common symptoms of OBDII code B0043 in a Chevrolet?
- Common symptoms include the airbag warning light illuminating on the dashboard, potential loss of communication with the airbag system, and in some cases, the airbags may not deploy properly in the event of an accident.
2. What does the OBDII code B0043 Chevrolet indicate?
- The code B0043 indicates that the Driver Frontal Deployment Loop Stage 2 Voltage is out of range in a Chevrolet vehicle.
3. What are the possible causes of OBDII code B0043 in a Chevrolet?
- Possible causes of code B0043 include faulty wiring connections, a malfunctioning airbag module, damaged impact sensors, or issues with the airbag deployment loop stage 2 voltage.
4. How can I diagnose OBDII code B0043 in my Chevrolet?
- Diagnosing code B0043 typically involves using a scan tool to retrieve the specific fault codes, inspecting the wiring and connections related to the driver frontal airbag system, and testing the voltage output of the stage 2 deployment loop.
5. Can I continue driving my Chevrolet with OBDII code B0043 present?
- It is not recommended to drive your Chevrolet with code B0043 present, as it indicates a potential issue with the driver frontal airbag system, which may compromise your safety in the event of a collision.
6. How can I repair OBDII code B0043 in my Chevrolet?
- Repairing code B0043 may involve repairing or replacing damaged wiring, fixing faulty connections, replacing the airbag module if necessary, or addressing issues with the deployment loop voltage. It is recommended to seek professional help for accurate diagnosis and repair.
7. Is OBDII code B0043 in a Chevrolet a common issue?
- While not extremely common, code B0043 can occur in Chevrolet vehicles due to various factors such as wear and tear, electrical issues, or component failures within the airbag system.
8. Can resetting the OBDII system clear code B0043 in a Chevrolet?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code B0043 is not addressed, the code is likely to reappear once the system detects the fault again.
9. Are there any safety concerns associated with OBDII code B0043 in a Chevrolet?
- Yes, there are safety concerns associated with code B0043, as it pertains to the proper functioning of the driver frontal airbag system, which is crucial for occupant protection in the event of a collision.
10. How long does it typically take to repair OBDII code B0043 in a Chevrolet?
- The repair time for code B0043 can vary depending on the exact cause of the issue and the complexity of the repair needed. It is advisable to consult a professional technician for an accurate estimate of the repair time.
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