B0042 Cadillac Code - Driver Frontal Deployment Loop Stage 2 Resistance Low
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
- B0042 Cadillac indicates Driver Frontal Deployment Loop Stage 2 Resistance Low.
- 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 B0042 Cadillac 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 B0042 Cadillac?
- 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 B0042 Cadillac?
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 B0042 Cadillac 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 B0042 Cadillac Code
1. What are the common symptoms of OBDII code B0042 in a Cadillac related to Driver Frontal Deployment Loop Stage 2 Resistance Low?
The common symptoms include the airbag warning light illuminating on the dashboard, possible non-deployment of the driver's frontal airbag during a collision, and diagnostic trouble codes stored in the vehicle's system.
2. What are the possible causes of OBDII code B0042 in a Cadillac?
Possible causes of this code include issues with the driver frontal airbag deployment loop, such as wiring harness problems, high resistance in the circuit, faulty airbag sensors, or a malfunctioning airbag control module.
3. How can I diagnose OBDII code B0042 in a Cadillac?
Diagnosing this code typically involves using a diagnostic scan tool to retrieve the specific trouble code, inspecting the wiring and connectors related to the driver frontal airbag system, and testing the resistance levels in the circuit using a multimeter.
4. What should I do if my Cadillac triggers OBDII code B0042 related to Driver Frontal Deployment Loop Stage 2 Resistance Low?
If this code is triggered, it is recommended to have the airbag system inspected and repaired by a qualified technician to ensure proper function and safety. Ignoring this issue can lead to potential airbag deployment failures in the event of a collision.
5. Can I repair OBDII code B0042 in a Cadillac on my own?
While some DIY enthusiasts may attempt to diagnose and repair this code, dealing with airbag systems can be complex and dangerous. It is highly recommended to seek professional assistance when dealing with airbag-related issues to ensure proper repairs and safety.
6. How much does it cost to fix OBDII code B0042 in a Cadillac?
The cost of repairing OBDII code B0042 can vary depending on the exact cause of the issue, parts needed for replacement, and labor costs. It is advisable to get a diagnostic assessment from a trusted mechanic to determine an accurate repair estimate.
7. Is it safe to drive my Cadillac with OBDII code B0042 present?
Driving with this code present may pose a risk as the driver frontal airbag system may not deploy properly in the event of a collision. It is recommended to address this issue promptly to ensure the safety of the vehicle occupants.
8. Can resetting the OBDII code B0042 in a Cadillac resolve the issue?
Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code. It is crucial to diagnose and repair the root cause of the issue to ensure the airbag system functions correctly.
9. Are there any recalls or service bulletins related to OBDII code B0042 in Cadillac vehicles?
It is advisable to check with a Cadillac dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or service bulletins related to OBDII code B0042 specific to your vehicle make and model.
10. How can I prevent OBDII code B0042 related to Driver Frontal Deployment Loop Stage 2 Resistance Low in my Cadillac?
To prevent this code, it is essential to perform regular maintenance checks on the airbag system, address any warning lights promptly, and follow the manufacturer's recommended service schedule for your vehicle. Regular inspections can help catch potential issues before they escalate.
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