B0091 GMC Code - Center Front Impact Sensor
Quick Answer
The B0091 code for GMC vehicles specifically pertains to the Center Front Impact Sensor. Common causes include Impact or collision that damages the sensor, Corrosion or moisture damage to the sensor, Wiring or electrical issues affecting the sensor. 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
- B0091 GMC indicates Center Front Impact Sensor.
- Common causes
- Common causes include Impact or collision that damages the sensor, Corrosion or moisture damage to the sensor, Wiring or electrical issues affecting the sensor.
- 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 B0091 GMC Description
The B0091 code for GMC vehicles specifically pertains to the Center Front Impact Sensor. This sensor is a crucial component of the vehicle's safety system, as it is designed to detect impacts to the front of the vehicle. When the sensor detects a collision or impact, it sends a signal to the airbag control module to deploy the airbags and other safety features to protect the occupants in the event of an accident.
Common Causes of B0091 GMC
- Impact or collision that damages the sensor
- Corrosion or moisture damage to the sensor
- Wiring or electrical issues affecting the sensor
- Manufacturing defects or sensor malfunction
- Vehicle age and wear leading to sensor deterioration
Symptoms of B0091 GMC
- Illumination of the airbag warning light on the dashboard
- Inaccurate or delayed deployment of airbags in the event of a collision
- Issues with other safety features such as seatbelt pretensioners
- Diagnostic trouble code B0091 stored in the vehicle's computer system
How to Fix B0091 GMC
- Begin by diagnosing the specific cause of the B0091 code, which may involve inspecting the sensor, wiring, and related components for damage or malfunction.
- If the sensor is damaged or faulty, it will need to be replaced with a new OEM part to ensure proper function and compatibility with the vehicle's safety systems.
- Check and repair any wiring or electrical issues that may be affecting the sensor's performance.
- Clear the diagnostic trouble code from the vehicle's computer system and test the sensor to ensure proper operation.
- Perform a thorough system check to verify that the sensor is functioning correctly and that the airbag system is operating as intended.
Cost to Fix B0091 GMC
The cost of repairing a Center Front Impact Sensor can vary depending on the make and model of the vehicle, the location of the repair shop, and the specific cause of the issue. On average, the cost of replacing a Center Front Impact Sensor can range from $200 to $500, including parts and labor. Additional costs may be incurred if there are other issues affecting the sensor or the vehicle's safety systems. It's advisable to consult with a qualified mechanic or repair shop to get an accurate estimate for your specific vehicle.
Tech Notes for B0091 GMC
B0091:02 Center Front Impact Sensor Short to Ground
B0091:05 Center Front Impact Sensor Short to Battery or Open
B0091:0F Center Front Impact Sensor Erratic
B0091:39 Center Front Impact Sensor Internal Electronic Failure
B0091:3A Center Front Impact Sensor Incorrect Component Installed
B0091:71 Center Front Impact Sensor Invalid Serial Data Received
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Information for Specific GMC Models
- B0091 2014 GMC Sierra — Center Front Impact Sensor
- B0091 2015 GMC Sierra — Center Front Impact Sensor
- B0091 2016 GMC Sierra — Center Front Impact Sensor
- B0091 2017 GMC Sierra — Center Front Impact Sensor
- B0091 2018 GMC Sierra — Center Front Impact Sensor
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 B0091 GMC Code
1. What is OBDII code B0091 for a GMC vehicle?
The OBDII code B0091 for a GMC vehicle refers to an issue with the Center Front Impact Sensor.
2. What are the common symptoms of OBDII code B0091 in a GMC?
Common symptoms of OBDII code B0091 in a GMC may include the airbag warning light illuminating on the dashboard and potential issues with the airbag system.
3. What can cause OBDII code B0091 to trigger in a GMC?
OBDII code B0091 in a GMC is typically triggered by a malfunction in the Center Front Impact Sensor, which may be due to wiring issues, sensor damage, or a faulty connection.
4. How can I diagnose OBDII code B0091 in my GMC?
Diagnosing OBDII code B0091 in a GMC involves using a diagnostic scanner to retrieve the specific error code, checking the wiring and connections to the Center Front Impact Sensor, and testing the sensor's functionality.
5. Can I still drive my GMC with OBDII code B0091?
It is not recommended to drive your GMC with OBDII code B0091 present, as it indicates a potential problem with the airbag system that could affect its functionality in the event of a collision.
6. How can I repair OBDII code B0091 in my GMC?
Repairing OBDII code B0091 in a GMC may involve repairing or replacing the Center Front Impact Sensor, addressing any wiring issues, and clearing the error code with a diagnostic tool.
7. Is it safe to reset the OBDII code B0091 in my GMC without fixing the issue?
It is not safe to reset the OBDII code B0091 in your GMC without addressing the underlying issue, as it could compromise the effectiveness of the airbag system in protecting you in a collision.
8. How much does it typically cost to fix OBDII code B0091 in a GMC?
The cost to fix OBDII code B0091 in a GMC can vary depending on the extent of the issue, but it may involve sensor replacement, wiring repairs, and labor costs, which could range from $200 to $500 or more.
9. Can I prevent OBDII code B0091 from occurring in my GMC?
While some causes of OBDII code B0091 may be unavoidable, regular maintenance and inspections of your GMC's airbag system can help detect potential issues early and prevent the code from triggering.
10. Do I need a professional mechanic to fix OBDII code B0091 in my GMC?
Fixing OBDII code B0091 in your GMC may require specialized knowledge and tools, so it is recommended to consult a professional mechanic or dealership to accurately diagnose and repair the issue.
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