Engine-CodesChevrolet – B0071 Chevrolet

B0071 Chevrolet Code - Passenger Seat Belt Tension Sensor Circuit

Quick Answer

The B0071 code for Chevrolet vehicles indicates a problem with the passenger seat belt tension sensor circuit. Common causes include Faulty passenger seat belt tension sensor, Loose or damaged wiring in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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 Chevrolet indicates Passenger Seat Belt Tension Sensor Circuit.
Common causes
Common causes include Faulty passenger seat belt tension sensor, Loose or damaged wiring in the sensor circuit, Corrosion or poor connections in the sensor circuit.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code B0071 Chevrolet Description

The B0071 code for Chevrolet vehicles indicates a problem with the passenger seat belt tension sensor circuit. This sensor is responsible for detecting the tension in the seat belt when the passenger is buckled up. If the sensor detects an issue with the tension, it will trigger the code and illuminate the airbag warning light on the dashboard. This can potentially affect the proper functioning of the airbag system and put the passenger at risk in the event of a collision.

OBDII Code B0071 Chevrolet - Passenger Seat Belt Tension Sensor Circuit
B0071 Chevrolet Code - Passenger Seat Belt Tension Sensor Circuit

Common Causes of B0071 Chevrolet

  1. Faulty passenger seat belt tension sensor.
  2. Loose or damaged wiring in the sensor circuit.
  3. Corrosion or poor connections in the sensor circuit.
  4. Issues with the airbag control module.
  5. Impact or damage to the passenger seat causing sensor malfunction.

Symptoms of B0071 Chevrolet

  1. Airbag warning light is illuminated on the dashboard.
  2. Passenger airbag may not deploy in a crash.
  3. Seat belt reminder chime may not work.
  4. Erratic or incorrect readings on the passenger seat belt tension display.
  5. Possible disabling of the passenger airbag system for safety reasons.

How to Fix B0071 Chevrolet

  1. Begin by diagnosing the specific cause of the B0071 code using a scan tool to read the fault codes and identify the issue.
  2. Inspect the wiring and connections in the passenger seat belt tension sensor circuit for any damage or corrosion. Repair or replace any damaged components.
  3. Test the sensor itself to determine if it is functioning properly. Replace the sensor if necessary.
  4. Clear the fault codes and reset the airbag system to ensure the code does not reappear.
  5. Conduct a thorough test drive to confirm that the repair has resolved the issue and that the airbag system is functioning correctly.

Cost to Fix B0071 Chevrolet

The cost of repairing a B0071 code for Chevrolet vehicles can vary depending on the specific cause of the issue. In general, the cost of parts such as a new passenger seat belt tension sensor can range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost could be anywhere from $200 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate.

Tech Notes for B0071 Chevrolet

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

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Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code B0071 in a Chevrolet related to the Passenger Seat Belt Tension Sensor Circuit?

- Common symptoms include the airbag light staying illuminated on the dashboard, intermittent or constant warning chimes, and potential non-deployment of the passenger-side airbag.

2. What are the possible causes of OBDII code B0071 in a Chevrolet?

- The code B0071 in a Chevrolet related to the Passenger Seat Belt Tension Sensor Circuit can be triggered by issues such as a faulty seat belt tension sensor, damaged wiring, or a malfunctioning airbag control module.

3. How can I diagnose the OBDII code B0071 in a Chevrolet?

- Diagnosing OBDII code B0071 typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the seat belt tension sensor and related wiring for damage, and testing the airbag control module for proper functionality.

4. Can I repair OBDII code B0071 in a Chevrolet on my own?

- While basic diagnostics like checking for loose connections or damaged wiring can be done by DIY enthusiasts, repairing OBDII code B0071 often requires specialized tools and knowledge. It is recommended to seek professional assistance for proper diagnosis and repair.

5. Is it safe to drive with OBDII code B0071 present in a Chevrolet?

- It is not advisable to continue driving with OBDII code B0071 triggered in a Chevrolet, as it indicates a potential issue with the passenger-side airbag system. Continuing to drive with this code present may compromise the effectiveness of the airbag in the event of a collision.

6. How much does it typically cost to repair OBDII code B0071 in a Chevrolet?

- The cost of repairing OBDII code B0071 in a Chevrolet can vary depending on the underlying cause of the issue. Costs may include parts replacement, labor charges, and diagnostic fees, so it is recommended to obtain quotes from reputable auto repair shops.

7. Are there any recalls or service bulletins related to OBDII code B0071 in Chevrolet vehicles?

- It is advisable to check with Chevrolet dealerships or the manufacturer's website for any recalls or service bulletins related to OBDII code B0071 in your specific Chevrolet model. Recalls or bulletins may provide information on known issues and solutions.

8. Can OBDII code B0071 be triggered by a simple issue like a loose connector?

- Yes, OBDII code B0071 can sometimes be triggered by a loose or disconnected connector related to the passenger seat belt tension sensor circuit. It is recommended to check all connections before proceeding with further diagnostics.

9. Will resetting the OBDII system clear the B0071 code in a Chevrolet?

- Resetting the OBDII system may temporarily clear the B0071 code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the code for a permanent solution.

10. What should I do if OBDII code B0071 keeps coming back after repairs?

- If OBDII code B0071 continues to reappear after repairs, it indicates that the issue has not been fully resolved. It is recommended to recheck the repairs, perform additional diagnostics if necessary, or seek professional help to address any persistent issues.

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