B0085:39 Code - Left Front Side Impact Sensor Internal Malfunction
Quick Answer
The B0085:39 code indicates an internal malfunction in the left front side impact sensor of the vehicle. Common causes include Sensor wiring or connector damage, Corrosion in the sensor connections, Impact damage to 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
- B0085:39 indicates Left Front Side Impact Sensor Internal Malfunction.
- Common causes
- Common causes include Sensor wiring or connector damage, Corrosion in the sensor connections, Impact damage to 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 B0085:39 Description
The B0085:39 code indicates an internal malfunction in the left front side impact sensor of the vehicle. Side impact sensors are crucial components of the vehicle's safety system, as they detect side impacts and send signals to the airbag control module to deploy the side airbags in the event of a collision. When this sensor malfunctions, it can compromise the vehicle's ability to accurately detect side impacts and deploy the necessary safety features.
Common Causes of B0085:39
- Sensor wiring or connector damage
- Corrosion in the sensor connections
- Impact damage to the sensor
- Internal circuitry failure in the sensor
- Faulty airbag control module
Symptoms of B0085:39
- Airbag warning light illuminated on the dashboard
- Side airbags not deploying in a side impact collision
- False airbag deployment warnings
- Erratic behavior of the airbag system
- Vehicle may fail safety inspections due to malfunctioning safety features
How to Fix B0085:39
- Begin by disconnecting the vehicle's battery to prevent any electrical mishaps.
- Locate the left front side impact sensor, typically located in the front fender or door area.
- Inspect the sensor wiring and connections for damage, corrosion, or loose connections.
- Test the sensor using a multimeter to check for continuity and proper functioning.
- If the sensor is deemed faulty, replace it with a new OEM sensor and reassemble the components.
Cost to Fix B0085:39
The typical repair cost for addressing a left front side impact sensor internal malfunction can range from $200 to $500, including parts and labor. However, as mentioned earlier, specific repair costs can vary based on factors such as the vehicle make and model, location, and labor rates at the auto repair shop. It's recommended to consult with a professional technician for an accurate estimate tailored to your specific situation.
Tech Notes for B0085:39
B0085:05 Left Front Side Impact Sensor High Voltage/Open
B0085:0F Left Front Side Impact Sensor Signal Erratic
B0085:39 Left Front Side Impact Sensor Internal Malfunction
B0085:3A Left Front Side Impact Sensor Incorrect Component Installed
B0085:71 Left Front 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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