AutoCodes – Chevrolet – B0071 2018 Chevrolet Silverado

B0071 2018 Chevrolet Silverado Code - Passenger Seat Belt Tension Sensor Circuit

Quick Answer

The seat belt tension sensor is a sensor mounted on the passenger seat belt retractor and provides input to the Passenger Presence Module. Common causes include Faulty Passenger Seat Belt Retractor (Passenger Seat Belt Tension Sensor), Passenger Seat Belt Retractor harness is open or shorted, Passenger Seat Belt Retractor 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: B0071 2018 Chevrolet Silverado indicates Passenger Seat Belt Tension Sensor Circuit.
Common causes: Common causes include Faulty Passenger Seat Belt Retractor (Passenger Seat Belt Tension Sensor), Passenger Seat Belt Retractor harness is open or shorted, Passenger Seat Belt Retractor 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.

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Code Popularity 517

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 17, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0071 2018 Chevrolet Silverado Description

The seat belt tension sensor is a sensor mounted on the passenger seat belt retractor and provides input to the Passenger Presence Module. When an infant car seat is properly restrained on the front passenger seat, the seat belt is tightly secured through the car seat. The seat belt pulls on the tension sensor and changes the voltage signal to the Passenger Presence Module. The Passenger Presence Module monitors the belt tension sensor signal circuit and if a fault is detected, the Diagnostic Trouble Code (DTC) will be set. When the Passenger Presence Module detects this DTC, it will send out a serial data message, and the Inflatable Restraint Sensing and Diagnostic Module will notify the customer of the enable/disable status by illuminating the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. The Inflatable Restraint Sensing and Diagnostic Module (SDM) will then suppress the deployment of the passenger instrument panel air bag and illuminate the AIR BAG indicator.

OBDII Code B0071 2018 Chevrolet Silverado - Passenger Seat Belt Tension Sensor Circuit - AutoCodes.com — B0071 2018 Chevrolet Silverado Code - Passenger Seat Belt Tension Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B0071 2018 Chevrolet Silverado?

Faulty Passenger Seat Belt Retractor (Passenger Seat Belt Tension Sensor)
Passenger Seat Belt Retractor harness is open or shorted
Passenger Seat Belt Retractor circuit poor electrical connection
Faulty Passenger Presence Module

How to Fix the DTC B0071 2018 Chevrolet Silverado?

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.

What does this mean?

Code Tech Notes

B0071:03 Passenger Seat Belt Tension Sensor Circuit Voltage Below Threshold
B0071:04 Passenger Seat Belt Tension Sensor Circuit Open
B0071:07 Passenger Seat Belt Tension Sensor Circuit Voltage Above Threshold
B0071:08 Passenger Seat Belt Tension Sensor Circuit Voltage Performance Signal Invalid

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0071 2018 Chevrolet Silverado 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 B0071 2018 Chevrolet Silverado code?

Need more information on how to fix the B0071 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0071 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0071 2018 Chevrolet Silverado Code

1. What does OBDII code B0071 mean for my 2018 Chevrolet Silverado?

The B0071 code indicates a problem with the passenger seat belt tension sensor circuit in your vehicle.

2. What are the common symptoms of a B0071 code in a 2018 Chevrolet Silverado?

Common symptoms include the airbag warning light coming on, the passenger airbag system not deploying properly, and potential issues with the seat belt warning system.

3. What are the possible causes of a B0071 code in a 2018 Chevrolet Silverado?

Causes can include a faulty seat belt tension sensor, damaged wiring or connectors in the sensor circuit, or issues with the airbag control module.

4. How can I diagnose a B0071 code in my 2018 Chevrolet Silverado?

Diagnosis typically involves using an OBDII scanner to read the code, inspecting the seat belt tension sensor and its connections, and checking for any visible damage or corrosion.

5. Can I still drive my 2018 Chevrolet Silverado with a B0071 code?

It is not recommended to drive with a B0071 code present, as it indicates a potential safety issue with the passenger airbag system. Have the issue diagnosed and repaired as soon as possible.

6. How can I repair a B0071 code in my 2018 Chevrolet Silverado?

Repairing a B0071 code may involve replacing the passenger seat belt tension sensor, repairing damaged wiring or connectors, or resetting the airbag control module.

7. Can I reset the B0071 code in my 2018 Chevrolet Silverado myself?

While you may be able to clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it cost to repair a B0071 code in a 2018 Chevrolet Silverado?

Repair costs can vary depending on the specific cause of the code and whether you choose to address the issue yourself or take it to a professional mechanic. Costs may range from a few hundred to over a thousand dollars.

9. Are there any safety concerns associated with a B0071 code in a 2018 Chevrolet Silverado?

Yes, a B0071 code can indicate a potential safety risk as it affects the passenger airbag system. It is essential to address this issue promptly to ensure the proper functioning of the safety systems in your vehicle.

10. How can I prevent a B0071 code from occurring in my 2018 Chevrolet Silverado?

Regularly inspecting and maintaining your vehicle's airbag and seat belt systems can help prevent issues like the B0071 code. If you notice any warning lights or abnormal behavior, have it checked by a qualified technician.