B0085 2015 GMC Sierra Code - Left Front Side Impact Sensor
Quick Answer
The impact sensors are equipped on vehicles to supplement the supplemental inflatable restraint (SIR) system performance. Common causes include Faulty Left Front Side Impact Sensor, Left Front Side Impact Sensor harness is open or shorted, Left Front Side Impact Sensor circuit poor electrical connection. 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 2015 GMC Sierra indicates Left Front Side Impact Sensor.
- Common causes
- Common causes include Faulty Left Front Side Impact Sensor, Left Front Side Impact Sensor harness is open or shorted, Left Front Side Impact Sensor circuit poor electrical connection.
- 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.
Code B0085 2015 GMC Sierra Description
What are the Possible Causes of the DTC B0085 2015 GMC Sierra?
- Faulty Left Front Side Impact Sensor
- Left Front Side Impact Sensor harness is open or shorted
- Left Front Side Impact Sensor circuit poor electrical connection
- Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)
How to Fix the DTC B0085 2015 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0085 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B0085 2015 GMC Sierra code?
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Need Help with the Code?
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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.
Frequently Asked Questions about B0085 2015 GMC Sierra Code
1. What does OBDII code B0085 mean on a 2015 GMC Sierra?
Code B0085 indicates an issue with the left front side impact sensor, which is a critical part of the vehicle's airbag system.
2. What are the symptoms of code B0085 in a 2015 GMC Sierra?
Common symptoms include the airbag warning light staying on, a stored trouble code, and possible malfunction of the airbag system.
3. What causes code B0085 to appear?
This code is typically caused by a faulty left front side impact sensor, damaged wiring or connectors, or issues in the airbag control module.
4. Is it safe to drive with code B0085 active?
Driving with this code may be unsafe, as it can indicate a malfunction in the airbag system, which could fail to deploy in an accident.
5. How do you diagnose code B0085 on a GMC Sierra?
Diagnosis involves scanning for fault codes, visually inspecting the sensor and wiring for damage, and testing the sensor with a multimeter to confirm functionality.
6. Can code B0085 be caused by a dead battery?
While unlikely, a dead or weak battery could cause communication issues with the sensor, but the primary cause is usually a faulty sensor or wiring.
7. How do you fix code B0085 in a 2015 GMC Sierra?
The fix typically involves replacing the left front side impact sensor, repairing damaged wiring, or reconnecting loose connectors.
8. How much does it cost to repair code B0085?
Repair costs can range from $150 to $400, depending on whether the sensor, wiring, or both need to be replaced.
9. Can I clear code B0085 without fixing the issue?
Clearing the code without addressing the root cause will only temporarily remove the warning and the code will likely return.
10. Where is the left front side impact sensor located on a 2015 GMC Sierra?
The left front side impact sensor is typically located near the lower portion of the driver-side door or in the B-pillar area.
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