B0087:71 Code - Left Rear Side Impact Sensor Invalid Data
Quick Answer
The B0087:71 diagnostic trouble code (DTC) indicates that there is invalid data coming from the left rear side impact sensor in the vehicle. Common causes include Faulty left rear side impact sensor, Wiring or connection issues between the sensor and the vehicle's electronic control module, Corrosion or damage to the sensor or its wiring. 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
- B0087:71 indicates Left Rear Side Impact Sensor Invalid Data.
- Common causes
- Common causes include Faulty left rear side impact sensor, Wiring or connection issues between the sensor and the vehicle's electronic control module, Corrosion or damage to the sensor or its wiring.
- 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 B0087:71 Description
The B0087:71 diagnostic trouble code (DTC) indicates that there is invalid data coming from the left rear side impact sensor in the vehicle. Side impact sensors are crucial components of a vehicle's safety system, as they help detect collisions from the side and deploy the appropriate safety measures, such as airbags, to protect the occupants. When the sensor sends invalid data, it means that it is not functioning properly, which can compromise the vehicle's ability to accurately detect side impacts and deploy safety features in a timely manner.
Common Causes of B0087:71
- Faulty left rear side impact sensor
- Wiring or connection issues between the sensor and the vehicle's electronic control module
- Corrosion or damage to the sensor or its wiring
- Impact or collision that damaged the sensor
- Software issues in the vehicle's electronic control module
Symptoms of B0087:71
- Airbag warning light illuminated on the dashboard
- Inaccurate or delayed deployment of airbags in a side impact collision
- Loss of communication with the left rear side impact sensor
- Vehicle may fail safety inspections due to the faulty sensor
How to Fix B0087:71
- Begin by diagnosing the specific cause of the invalid data from the left rear side impact sensor using a diagnostic scan tool.
- Inspect the sensor, wiring, and connections for any visible damage, corrosion, or loose connections.
- Test the sensor's functionality and resistance to ensure it is operating within specifications.
- If the sensor is faulty, replace it with a new OEM or high-quality aftermarket sensor.
- Clear the DTC from the vehicle's onboard computer and perform a test drive to ensure the issue has been resolved.
Cost to Fix B0087:71
The cost of repairing a B0087:71 DTC related to the left rear side impact sensor can vary depending on the specific cause of the issue and the vehicle's make and model. In general, the cost of replacing a side impact sensor can range from $100 to $300 for the part alone. Labor costs for diagnosis and repair can add an additional $100 to $300, bringing the total repair cost to approximately $200 to $600. It is important to note that labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.
Tech Notes for B0087:71
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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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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