B0104 GMC Code - Passenger-Side EFS Not Okay Message
Quick Answer
The B0104 GMC code indicates that there is an issue with the passenger-side EFS (Electronic Front Sensor) in the vehicle. Common causes include Faulty passenger-side EFS sensor, Damaged wiring connecting the EFS sensor to the airbag control module, Malfunctioning airbag control module. 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
- B0104 GMC indicates Passenger-Side EFS Not Okay Message.
- Common causes
- Common causes include Faulty passenger-side EFS sensor, Damaged wiring connecting the EFS sensor to the airbag control module, Malfunctioning airbag control module.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B0104 GMC Description
The B0104 GMC code indicates that there is an issue with the passenger-side EFS (Electronic Front Sensor) in the vehicle. The EFS is responsible for detecting any impact on the front of the vehicle and sending signals to the airbag system to deploy in the event of a collision. When the passenger-side EFS is not functioning properly, it can lead to a variety of safety concerns for the vehicle and its occupants.
Common Causes of B0104 GMC
- Faulty passenger-side EFS sensor
- Damaged wiring connecting the EFS sensor to the airbag control module
- Malfunctioning airbag control module
- Corrosion or loose connections in the EFS system
- Impact or collision that may have damaged the EFS sensor
Symptoms of B0104 GMC
- Airbag warning light illuminated on the dashboard
- Passenger airbag off indicator showing when a passenger is seated
- Inability to manually turn on the passenger airbag
- Vehicle showing diagnostic trouble codes related to the airbag system
How to Fix B0104 GMC
- Start by using a diagnostic scanner to retrieve the specific trouble codes and confirm that the issue is related to the passenger-side EFS.
- Inspect the wiring connecting the EFS sensor to the airbag control module for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring.
- Test the passenger-side EFS sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if necessary.
- If the issue persists, inspect the airbag control module for any malfunctions. Replace the control module if needed.
- Clear the trouble codes from the vehicle's computer system and test the airbag system to ensure that the issue has been resolved.
Cost to Fix B0104 GMC
The typical repair costs for addressing the B0104 GMC code can vary depending on the specific cause of the issue and the components that need to be replaced. On average, the parts for this repair can range from $100 to $500, while the labor costs can be anywhere from $150 to $300. Keep in mind that these are rough estimates, and the actual costs can differ based on various factors such as the location of the repair shop, the vehicle's make and model, and the extent of the repairs needed. It is advisable to consult with a professional mechanic or dealership to get a more accurate cost estimate for your specific situation.
Need more information about the B0104 GMC code?
Need more information on how to fix the B0104 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B0104 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.
Frequently Asked Questions about B0104 GMC Code
1. What are the common symptoms of OBDII code B0104 GMC (Passenger-Side EFS Not Okay Message)?
- The common symptoms include the airbag warning light illuminating on the dashboard and a message indicating "Passenger-Side EFS Not Okay."
2. What are some possible causes of OBDII code B0104 GMC?
- The code B0104 GMC typically indicates a fault with the passenger-side electronic front sensor (EFS). Possible causes include a malfunctioning sensor, wiring issues, or a faulty airbag control module.
3. How serious is the OBDII code B0104 GMC?
- The B0104 code is related to the passenger-side airbag system, so it is considered a serious issue that should be addressed promptly to ensure the proper functioning of the airbag in case of an accident.
4. Can I continue driving with the OBDII code B0104 GMC present?
- It is not recommended to continue driving with the B0104 code present, as it indicates a potential problem with the passenger-side airbag system, which could affect its functionality in the event of a collision.
5. How can I diagnose and repair OBDII code B0104 GMC?
- Diagnosing and repairing the B0104 code typically involves using a scan tool to identify the specific issue with the passenger-side EFS, checking the wiring and connections for any faults, and replacing any faulty components as needed.
6. Can I reset the OBDII code B0104 GMC without fixing the underlying issue?
- While you can clear the code temporarily by resetting the vehicle's computer, it is important to address the underlying problem causing the B0104 code to prevent it from reoccurring and ensure the proper operation of the airbag system.
7. Are there any DIY tips for fixing the OBDII code B0104 GMC?
- DIY tips for fixing the B0104 code may include checking the sensor connections for corrosion or damage, inspecting the wiring for any breaks or shorts, and ensuring all connections are secure before considering sensor or module replacement.
8. How much does it typically cost to repair OBDII code B0104 GMC at a dealership or repair shop?
- The cost of repairing the B0104 code can vary depending on the specific issue causing the fault. Repair costs may include diagnostic fees, parts replacement, and labor costs, which can range from a few hundred to over a thousand dollars.
9. Is OBDII code B0104 GMC covered under any vehicle warranties?
- Depending on the vehicle's warranty coverage, the repair for the B0104 code may be covered if it falls within the terms of the warranty. It is advisable to check with the vehicle manufacturer or dealership to determine warranty coverage for this issue.
10. How can I prevent OBDII code B0104 GMC from occurring in the future?
- To prevent the B0104 code from occurring in the future, regular maintenance and inspection of the airbag system, including the sensors and wiring, can help identify and address any potential issues before they trigger the code.
Discuss the causes and fixes for B0104 GMC OBDII Code
Code B0104 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.