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B1C39 Mitsubishi Code - 1st Row Driver Retractor Tensioner Circuit High

Quick Answer

The B1C39 code for Mitsubishi vehicles specifically refers to an issue with the 1st Row Driver Retractor Tensioner Circuit being too high. Common causes include Faulty wiring connections or harnesses, Damaged seatbelt tensioner unit, Malfunctioning airbag control module. 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
B1C39 Mitsubishi indicates 1st Row Driver Retractor Tensioner Circuit High.
Common causes
Common causes include Faulty wiring connections or harnesses, Damaged seatbelt tensioner unit, Malfunctioning airbag control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1C39 Mitsubishi Description

The B1C39 code for Mitsubishi vehicles specifically refers to an issue with the 1st Row Driver Retractor Tensioner Circuit being too high. This means that there is a problem with the tensioner system that is responsible for retracting the seatbelt in the event of a collision or sudden stop. The seatbelt tensioner is a crucial safety feature that ensures the driver is securely restrained in their seat during an accident, reducing the risk of injury.

OBDII Code B1C39 Mitsubishi - 1st Row Driver Retractor Tensioner Circuit High
B1C39 Mitsubishi Code - 1st Row Driver Retractor Tensioner Circuit High

Common Causes of B1C39 Mitsubishi

  1. Faulty wiring connections or harnesses.
  2. Damaged seatbelt tensioner unit.
  3. Malfunctioning airbag control module.
  4. Corrosion or rust affecting the components.
  5. Impact or damage to the vehicle causing the issue.

Symptoms of B1C39 Mitsubishi

  1. Illumination of the airbag warning light on the dashboard.
  2. Inability to retract or adjust the seatbelt.
  3. Audible warning chimes or alerts when driving.
  4. Issues with the airbag system not functioning correctly.
  5. Possible deployment of the airbag in the event of a collision.

How to Fix B1C39 Mitsubishi

  1. Begin by disconnecting the vehicle's battery to prevent any electrical shocks.
  2. Inspect the wiring connections and harnesses for any signs of damage or corrosion. Repair or replace as needed.
  3. Check the seatbelt tensioner unit for any physical damage or malfunction. Replace if necessary.
  4. Test the airbag control module to determine if it is the source of the issue. Replace if faulty.
  5. Once all components have been repaired or replaced, clear the diagnostic trouble codes and test the system to ensure proper functionality.

Cost to Fix B1C39 Mitsubishi

The cost of repairing the 1st Row Driver Retractor Tensioner Circuit High code can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. However, it is important to note that labor rates at auto repair shops can vary, with hourly rates typically falling between $80 to $150. It is recommended to obtain quotes from local repair shops to get a more accurate estimate for this repair.

When is the Code Detected?

This Diagnostic Trouble Code (DTC) sets when the Occupant Restraint Controller (ORC) detects a short to voltage on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from a short to voltage for greater than 2.5 seconds.

Need more information about the B1C39 Mitsubishi 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.

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 B1C39 Mitsubishi Code

1. What are the common symptoms of OBDII code B1C39 in a Mitsubishi related to the 1st Row Driver Retractor Tensioner Circuit High?

The common symptoms include the airbag warning light staying illuminated on the dashboard and possible loss of functionality of the driver's seatbelt tensioner.

2. What could cause the OBDII code B1C39 in a Mitsubishi indicating 1st Row Driver Retractor Tensioner Circuit High?

Possible causes include damaged wiring or connectors in the driver's seatbelt tensioner circuit, a faulty tensioner mechanism, or a problem with the airbag control module.

3. How serious is the OBDII code B1C39 in a Mitsubishi indicating 1st Row Driver Retractor Tensioner Circuit High?

This code is concerning as it relates to the driver's seatbelt tensioner, an important safety component. It is crucial to address this issue promptly to ensure the proper functioning of the seatbelt system in the event of a collision.

4. Can I continue driving my Mitsubishi with the OBDII code B1C39 indicating 1st Row Driver Retractor Tensioner Circuit High?

It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the driver's seatbelt tensioner system, which is crucial for occupant safety in the event of an accident.

5. How can I diagnose and repair OBDII code B1C39 related to the 1st Row Driver Retractor Tensioner Circuit High in my Mitsubishi?

Diagnosing this code typically involves inspecting the wiring, connectors, and components in the driver's seatbelt tensioner circuit. Repair may involve repairing or replacing damaged wiring, connectors, or the seatbelt tensioner mechanism itself.

6. Is it possible to reset the OBDII code B1C39 indicating 1st Row Driver Retractor Tensioner Circuit High in my Mitsubishi without fixing the underlying issue?

While you may be able to clear the code temporarily, it will likely reappear until the root cause of the problem is addressed. It is essential to diagnose and repair the issue to ensure the proper functioning of the seatbelt tensioner system.

7. Can a DIY enthusiast fix the OBDII code B1C39 related to the 1st Row Driver Retractor Tensioner Circuit High in a Mitsubishi?

While some basic troubleshooting like checking connections and fuses can be done by DIY enthusiasts, diagnosing and repairing issues related to the seatbelt tensioner system may require specialized tools and expertise, so it is recommended to consult a professional technician.

8. Are there any safety precautions to take when working on the 1st Row Driver Retractor Tensioner Circuit in a Mitsubishi with OBDII code B1C39?

When working on the seatbelt tensioner system, always disconnect the vehicle's battery to prevent accidental airbag deployment. Additionally, follow all safety procedures outlined in the vehicle's service manual to avoid injury.

9. How much does it typically cost to repair OBDII code B1C39 indicating 1st Row Driver Retractor Tensioner Circuit High in a Mitsubishi?

The cost of repair can vary depending on the underlying issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain quotes from different mechanics to compare prices.

10. Can OBDII code B1C39 in a Mitsubishi related to the 1st Row Driver Retractor Tensioner Circuit High affect the vehicle's overall safety rating?

Yes, unresolved issues with the seatbelt tensioner system indicated by this code can impact the vehicle's safety rating, as this system plays a crucial role in protecting occupants during a collision. It is essential to address this issue promptly to maintain the vehicle's safety features.

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