AutoCodes – Mitsubishi – B1C4E Mitsubishi

B1C4E Mitsubishi Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open

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: B1C4E Mitsubishi indicates 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open.
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 572

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 Aug 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1C4E 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 B1C4E Mitsubishi - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open - AutoCodes.com — B1C4E Mitsubishi Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1C4E 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 B1C4E 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 B1C4E 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 B1C4E Mitsubishi code?

Need more information on how to fix the B1C4E Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C4E 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 B1C4E Mitsubishi Code

1. What are the common symptoms of OBDII code B1C4E in a Mitsubishi related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open?

The common symptoms include the airbag warning light illuminating on the dashboard and the passenger seat belt warning alarm sounding intermittently.

2. What are the possible causes of the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open code (B1C4E) in a Mitsubishi?

Possible causes may include a faulty seat belt buckle tensioner, damaged wiring or connectors in the seat belt system, or a problem with the airbag control module.

3. How can I diagnose the issue causing the B1C4E OBDII code in my Mitsubishi?

Diagnosing the problem typically involves using a diagnostic scan tool to read the fault codes, checking the wiring and connectors in the seat belt system, and testing the seat belt buckle tensioner for proper functionality.

4. Is it safe to drive my Mitsubishi with the B1C4E fault code related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open?

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

5. Can I reset the B1C4E OBDII code in my Mitsubishi without fixing the underlying issue?

While you can clear the fault code with a diagnostic scan tool, it is important to address the root cause of the problem to ensure the safety features of the seat belt tensioner and airbag system are functioning correctly.

6. How much does it typically cost to repair the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open issue in a Mitsubishi?

The cost of repairs can vary depending on the specific cause of the problem, but it may involve replacing the seat belt buckle tensioner, repairing damaged wiring, or reprogramming the airbag control module. Costs can range from a few hundred to over a thousand dollars.

7. Are there any safety precautions I should take when working on the seat belt system to fix the B1C4E fault code in my Mitsubishi?

It is important to disconnect the vehicle's battery before working on the seat belt system to prevent accidental airbag deployment. Additionally, following the manufacturer's repair procedures and using proper safety equipment is recommended.

8. Can a DIY enthusiast with basic automotive knowledge fix the B1C4E OBDII code related to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open in a Mitsubishi?

Repairing this issue may require specialized tools and expertise, so it is best to consult a qualified mechanic or dealership to properly diagnose and repair the problem for optimal safety and performance.

9. Will fixing the B1C4E fault code in my Mitsubishi require reprogramming or recalibrating any components?

In some cases, repairing the seat belt tensioner circuit open issue may require reprogramming or recalibrating the airbag control module to ensure proper communication and functionality of the system after repairs are completed.

10. How long does it typically take to repair the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Open issue causing the B1C4E fault code in a Mitsubishi?

The repair time can vary depending on the extent of the problem and the availability of parts, but it may take a few hours to a full day to diagnose, repair, and test the seat belt tensioner circuit open issue in a Mitsubishi.