AutoCodes – Mitsubishi – B1C4C Mitsubishi

B1C4C Mitsubishi Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low

Quick Answer

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. Common causes include Faulty 1st Row Passenger Seat Belt Buckle Tensioner, 1st Row Passenger Seat Belt Buckle Tensioner harness is open or shorted, 1st Row Passenger Seat Belt Buckle Tensioner 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: B1C4C Mitsubishi indicates 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low.
Common causes: Common causes include Faulty 1st Row Passenger Seat Belt Buckle Tensioner, 1st Row Passenger Seat Belt Buckle Tensioner harness is open or shorted, 1st Row Passenger Seat Belt Buckle Tensioner 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 523

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1C4C Mitsubishi Description

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a floating configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. The use of the Supplemental Restraints System (SRS) Load Tool Adapter provides a test point as well as a method for opening the shorting bar connections within the harness connector. The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 500 ms thereafter while the ignition is in on. The module then monitors the data return wire to determine the state of the circuit.

OBDII Code B1C4C Mitsubishi - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low - AutoCodes.com — B1C4C Mitsubishi Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1C4C Mitsubishi?

Faulty 1st Row Passenger Seat Belt Buckle Tensioner
1st Row Passenger Seat Belt Buckle Tensioner harness is open or shorted
1st Row Passenger Seat Belt Buckle Tensioner circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1C4C Mitsubishi?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1C4C Mitsubishi 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 B1C4C Mitsubishi code?

Need more information on how to fix the B1C4C Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C4C Mitsubishi 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 B1C4C Mitsubishi Code

1. What are the common symptoms of OBDII code B1C4C in a Mitsubishi related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low?

The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the passenger seat belt tensioner system.

2. What can cause the OBDII code B1C4C in a Mitsubishi, indicating a 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low?

The code B1C4C typically indicates a fault with the passenger seat belt buckle tensioner circuit, which can be caused by wiring issues, a faulty tensioner buckle, or a malfunctioning airbag control module.

3. How serious is the OBDII code B1C4C related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low in a Mitsubishi?

This code is considered serious as it relates to the safety of the passenger seat belt tensioner system, which is an essential component of the vehicle's overall safety restraint system.

4. Can I continue to drive my Mitsubishi with the OBDII code B1C4C indicating a 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low?

It is not recommended to drive the vehicle with this code present, as it may affect the proper functioning of the passenger seat belt tensioner system and compromise occupant safety in the event of a collision.

5. How can I diagnose and repair the OBDII code B1C4C in my Mitsubishi indicating a 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low?

Diagnosis typically involves inspecting the wiring, connectors, and components of the passenger seat belt tensioner system. Repair may involve fixing wiring issues, replacing the tensioner buckle, or addressing faults in the airbag control module.

6. Is it possible to reset the OBDII code B1C4C related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low in a Mitsubishi?

Resetting the code may temporarily clear the warning light, but it is important to diagnose and address the underlying issue to ensure the proper functioning of the passenger seat belt tensioner system.

7. Can a DIY enthusiast fix the OBDII code B1C4C indicating a 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low in a Mitsubishi?

While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing this code may require specialized tools and expertise, so it is advisable to consult a professional mechanic.

8. How much does it cost to repair the OBDII code B1C4C in a Mitsubishi related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low?

The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic fees, so it is recommended to obtain quotes from different repair shops.

9. Are there any safety precautions to consider when dealing with the OBDII code B1C4C indicating a 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low in a Mitsubishi?

When working on the passenger seat belt tensioner system, it is crucial to disconnect the vehicle's battery, follow proper safety protocols, and handle airbag components with care to prevent accidental deployment.