B0091:01 Code - Center Front Impact Sensor Short to Battery
Quick Answer
The B0091:01 diagnostic trouble code indicates that there is a short to battery in the center front impact sensor of the vehicle. Common causes include Wiring damage or corrosion in the center front impact sensor circuit, Faulty center front impact sensor, Short circuit in the wiring harness. 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
- B0091:01 indicates Center Front Impact Sensor Short to Battery.
- Common causes
- Common causes include Wiring damage or corrosion in the center front impact sensor circuit, Faulty center front impact sensor, Short circuit in the wiring harness.
- 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 B0091:01 Description
The B0091:01 diagnostic trouble code indicates that there is a short to battery in the center front impact sensor of the vehicle. The center front impact sensor is a crucial component of the vehicle's safety system, responsible for detecting collisions and deploying airbags to protect occupants. A short to battery means that there is an unintended connection between the sensor and the vehicle's battery, which can lead to incorrect readings or a complete failure of the sensor.
Common Causes of B0091:01
- Wiring damage or corrosion in the center front impact sensor circuit
- Faulty center front impact sensor
- Short circuit in the wiring harness
- Issues with the airbag control module
- Electrical problems in the vehicle's system
Symptoms of B0091:01
- Airbag warning light illuminated on the dashboard
- Inconsistent or erratic airbag deployment
- Vehicle fails airbag system self-test
- Diagnostic trouble code B0091:01 stored in the vehicle's computer system
How to Fix B0091:01
- Begin by disconnecting the vehicle's battery to prevent any electrical mishaps.
- Locate the center front impact sensor in the front bumper area of the vehicle.
- Inspect the wiring harness for any signs of damage, corrosion, or shorts.
- Test the center front impact sensor for proper functionality using a multimeter.
- Replace the center front impact sensor if it is found to be faulty, and repair any damaged wiring or connections.
Cost to Fix B0091:01
The cost of repairing a center front impact sensor short to battery can vary depending on the make and model of the vehicle, as well as the extent of the damage. In general, the parts for this repair can range from $100 to $300, while the labor costs can be between $150 to $300. Overall, the total cost of repairing this issue can be anywhere from $250 to $600. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle.
Tech Notes for B0091:01
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
Need more information about the B0091:01 code?
Need more information on how to fix the B0091:01 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B0091:01 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 B0091:01 Code
1. What does OBDII code B0091:01 mean?
B0091:01 indicates a "Center Front Impact Sensor Short to Battery," meaning there is an electrical issue where the sensor is receiving excessive voltage due to a wiring short.
2. What are the common symptoms of code B0091:01?
Symptoms may include the airbag warning light illuminated, disabled airbag system, or error messages related to the vehicle’s safety restraint system.
3. What causes the B0091:01 code to appear?
The most common causes are damaged wiring, a short circuit to the battery, a faulty center front impact sensor, or a malfunctioning airbag control module.
4. Can I still drive my vehicle with code B0091:01?
While the car may still be drivable, it’s unsafe because the airbag system may not function properly in the event of a collision.
5. How do I diagnose the B0091:01 code?
Diagnosis involves inspecting the wiring and connectors for damage, checking for a short circuit, and testing the center front impact sensor for proper operation.
6. How is the B0091:01 code fixed?
Repairs may include replacing damaged wiring, repairing the short circuit, replacing the center front impact sensor, or reprogramming the airbag control module.
7. Can I reset the B0091:01 code without repairs?
Resetting the code without addressing the issue is not recommended, as the problem will likely reoccur and could compromise vehicle safety.
8. How much does it cost to fix the B0091:01 code?
Repair costs depend on the issue but typically range from $100 to $500, with sensor replacement being on the higher end.
9. What tools are needed to troubleshoot the B0091:01 code?
You’ll need an OBDII scanner, a multimeter to check for short circuits, and possibly a wiring diagram for your vehicle.
10. Can a failing battery cause the B0091:01 code?
A failing battery is unlikely to cause this code directly, but irregular voltage levels could contribute to electrical issues.
Discuss the causes and fixes for B0091:01 OBDII Code
Code B0091:01 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.