B0091:05 Code - Center Front Impact Sensor Short to Battery or Open
Quick Answer
The B0091:05 diagnostic trouble code (DTC) indicates that there is a short to battery or an open circuit detected in the center front impact sensor of the vehicle. Common causes include Wiring harness damage or corrosion, Faulty impact sensor, Loose or poor connection in the sensor circuit. 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
- B0091:05 indicates Center Front Impact Sensor Short to Battery or Open.
- Common causes
- Common causes include Wiring harness damage or corrosion, Faulty impact sensor, Loose or poor connection in the sensor circuit.
- 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 B0091:05 Description
The B0091:05 diagnostic trouble code (DTC) indicates that there is a short to battery or an open circuit detected in the center front impact sensor of the vehicle. This sensor is a crucial component of the vehicle's supplemental restraint system (SRS), commonly known as the airbag system. In the event of a collision, the impact sensor detects the force of impact and triggers the deployment of the airbags to protect the occupants.
Common Causes of B0091:05
- Wiring harness damage or corrosion
- Faulty impact sensor
- Loose or poor connection in the sensor circuit
- Water damage to the sensor or wiring
- Impact sensor location affected by physical damage or debris
Symptoms of B0091:05
- Airbag warning light illuminated on the dashboard
- Loss of power to the airbag system
- Inability to deploy airbags in a collision
- SRS warning message displayed on the instrument cluster
How to Fix B0091:05
- Diagnose the specific cause of the issue using a diagnostic scan tool to pinpoint the exact location of the short or open circuit.
- Inspect the wiring harness and sensor connections for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the sensor functionality to determine if it is faulty and needs to be replaced.
- Clear the DTC from the vehicle's computer system using the diagnostic tool.
- Perform a thorough test drive to ensure that the airbag system is functioning correctly and that the warning lights have been reset.
Cost to Fix B0091:05
The cost of repairing a center front impact sensor short to battery or open circuit can vary depending on the vehicle make and model, as well as the extent of the damage. In general, the parts for this repair could range from $100 to $300, while labor costs could range from $150 to $300. Therefore, the total cost for this repair could be estimated to be between $250 and $600. It's important to keep in mind that these costs are approximate and can fluctuate based on various factors, such as the location of the repair shop and the availability of parts. It is advisable to consult with a professional mechanic to get an accurate estimate for your specific situation.
Tech Notes for B0091:05
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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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.
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