B0087 Code - Left Rear Side Impact Sensor
Quick Answer
The B0087 code indicates a problem with the left rear side impact sensor in the vehicle. Common causes include Faulty left rear side impact sensor, Wiring issues or shorts in the sensor circuit, Corrosion or damage to the sensor connectors. 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
- B0087 indicates Left Rear Side Impact Sensor.
- Common causes
- Common causes include Faulty left rear side impact sensor, Wiring issues or shorts in the sensor circuit, Corrosion or damage to the sensor connectors.
- 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 B0087 Description
The B0087 code indicates a problem with the left rear side impact sensor in the vehicle. This sensor is responsible for detecting impacts on the left side of the vehicle and sending signals to the airbag control module to deploy the side airbags in case of a collision. When this sensor malfunctions, it can affect the proper deployment of the side airbags, compromising the safety of the vehicle occupants in the event of a side impact collision. It is crucial to address this issue promptly to ensure the proper functioning of the vehicle's safety systems.
Common Causes of B0087
- Faulty left rear side impact sensor
- Wiring issues or shorts in the sensor circuit
- Corrosion or damage to the sensor connectors
- Impact or damage to the sensor from a previous collision
- Issues with the airbag control module
Symptoms of B0087
- Warning light on the dashboard indicating an issue with the airbag system
- Side airbags not deploying in a side impact collision
- False alarms where the side airbags deploy without a collision
- Erratic behavior of the side airbag system
How to Fix B0087
- Diagnostic scan: Use a diagnostic scanner to retrieve the specific fault code and pinpoint the exact cause of the issue.
- Visual inspection: Inspect the left rear side impact sensor and its wiring for any visible damage, corrosion, or loose connections.
- Replace sensor: If the sensor is faulty, replace it with a new one following the manufacturer's recommendations.
- Repair wiring: Repair any damaged or corroded wiring in the sensor circuit.
- Clear codes: After repairing the issue, clear the fault codes and test the system to ensure the problem has been resolved.
Cost to Fix B0087
The cost of repairing a left rear side impact sensor can vary depending on the make and model of the vehicle, as well as the specific cause of the issue. On average, the parts for a side impact sensor can range from $100 to $300, while the labor costs can range from $100 to $200. Overall, the total cost of repairing a B0087 code may fall between $200 to $500. It is advisable to check with local auto repair shops for more accurate pricing based on your specific vehicle and location.
Tech Notes for B0087
B0087:05 Left Rear Side Impact Sensor High Voltage/Open
B0087:39 Left Rear Side Impact Sensor Internal Malfunction
B0087:3A Left Rear Side Impact Sensor Incorrect Component Installed
B0087:71 Left Rear Side Impact Sensor Invalid Data
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Code B0087 Information for Specific Makes
- B0087 Buick — Left Rear Side Impact Sensor
- B0087 Cadillac — Left Rear Side Impact Sensor
- B0087 Chevrolet — Left Rear Side Impact Sensor
- B0087 GMC — Left Rear Side 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 B0087 Code
1. What does the OBDII code B0087 mean?
B0087 indicates a fault in the left rear side impact sensor, which is part of the vehicle’s airbag system.
2. What are the symptoms of a B0087 code?
Common symptoms include an illuminated airbag warning light, potential deactivation of the airbag system, and no noticeable driving performance issues.
3. What causes the B0087 code to appear?
The code can be caused by a faulty left rear side impact sensor, damaged wiring or connectors, water intrusion, or a failure in the airbag control module.
4. Is it safe to drive with a B0087 code?
While the vehicle may still operate normally, driving with this code can compromise the airbag system’s performance in the event of a collision.
5. How do you diagnose a B0087 code?
A technician will use a scan tool to read the code, inspect the left rear side impact sensor and its wiring, and test the sensor’s electrical signals.
6. Can a B0087 code be triggered by a minor collision?
Yes, minor collisions or impacts near the left rear side of the vehicle can damage the sensor and trigger this code.
7. How do you fix a B0087 code?
Repairs may include replacing the left rear side impact sensor, repairing or replacing damaged wiring, or addressing issues with the airbag control module.
8. How much does it cost to fix a B0087 code?
The cost can vary, but replacing the sensor typically ranges from $150 to $400, depending on labor and parts.
9. Can I clear the B0087 code without repairing the issue?
Clearing the code without addressing the root cause may temporarily turn off the warning light, but the issue will likely return and compromise airbag functionality.
10. What tools are needed to fix a B0087 code?
Common tools include an OBDII scanner, a multimeter for electrical testing, and basic hand tools for sensor replacement or wiring repairs.
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