AutoCodes – Mitsubishi – B1C4A Mitsubishi

B1C4A Mitsubishi Code - 1st Row Passenger Retractor Tensioner Circuit Shorted Together

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 Retractor Tensioner, 1st Row Passenger Retractor Tensioner harness is open or shorted, 1st Row Passenger Retractor 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: B1C4A Mitsubishi indicates 1st Row Passenger Retractor Tensioner Circuit Shorted Together.
Common causes: Common causes include Faulty 1st Row Passenger Retractor Tensioner, 1st Row Passenger Retractor Tensioner harness is open or shorted, 1st Row Passenger Retractor 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 1,217

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 B1C4A 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 B1C4A Mitsubishi - 1st Row Passenger Retractor Tensioner Circuit Shorted Together - AutoCodes.com — B1C4A Mitsubishi Code - 1st Row Passenger Retractor Tensioner Circuit Shorted Together

What does this mean?

What are the Possible Causes of the DTC B1C4A Mitsubishi?

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

How to Fix the DTC B1C4A 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 B1C4A 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 B1C4A Mitsubishi code?

Need more information on how to fix the B1C4A Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C4A 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 B1C4A Mitsubishi Code

1. What are common symptoms of OBDII code B1C4A in a Mitsubishi related to the 1st Row Passenger Retractor Tensioner Circuit Shorted Together?

The common symptoms include the airbag warning light staying illuminated on the dashboard and possible non-deployment of the passenger side airbag during a collision.

2. What are the possible causes of OBDII code B1C4A in a Mitsubishi?

The code B1C4A typically indicates a shorted circuit in the 1st Row Passenger Retractor Tensioner system, which could be caused by damaged wiring, a faulty tensioner mechanism, or a problem with the airbag control module.

3. How can I diagnose the issue related to OBDII code B1C4A in my Mitsubishi?

Diagnosing the problem may involve using a diagnostic scanner to read the fault code, conducting a visual inspection of the wiring and connectors in the passenger retractor tensioner system, and testing the components for proper functionality.

4. Can I continue to drive my Mitsubishi with OBDII code B1C4A present?

It is not recommended to drive the vehicle with the B1C4A fault code active, as it indicates a potential issue with the passenger side airbag system, which could compromise passenger safety in the event of a collision.

5. How can I repair OBDII code B1C4A related to the 1st Row Passenger Retractor Tensioner Circuit Shorted Together in my Mitsubishi?

Repairing the issue may involve repairing or replacing damaged wiring, repairing or replacing the passenger retractor tensioner mechanism, or reprogramming the airbag control module to address the shorted circuit.

6. Is it safe to reset the OBDII code B1C4A in my Mitsubishi using a diagnostic scanner?

While you can reset the fault code using a diagnostic scanner, it is important to first address the underlying issue causing the fault code to prevent potential safety risks associated with the passenger side airbag system.

7. Are there any safety precautions I should take when working on the 1st Row Passenger Retractor Tensioner Circuit in my Mitsubishi?

When working on the airbag system, it is crucial to disconnect the vehicle's battery and wait for at least 10 minutes before starting any repairs to prevent accidental deployment of the airbags.

8. How much does it typically cost to repair OBDII code B1C4A related to the 1st Row Passenger Retractor Tensioner Circuit in a Mitsubishi?

The cost of repairing the B1C4A code can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast with automotive experience repair OBDII code B1C4A in a Mitsubishi?

While some DIY enthusiasts with experience in automotive repair may be able to address the issue related to the B1C4A code, working on the airbag system requires caution and specific knowledge. It is recommended to seek professional help if unsure.

10. How often should I have the airbag system in my Mitsubishi checked to prevent issues like OBDII code B1C4A from occurring?

It is recommended to have the airbag system in your Mitsubishi inspected as part of regular maintenance or whenever you notice any warning lights related to the airbag system to prevent potential safety hazards and OBDII fault codes like B1C4A.